cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Previous Showing 11-20 of 25 results. Next

A217076 Numbers k such that (k^37-1)/(k-1) is prime.

Original entry on oeis.org

61, 77, 94, 97, 99, 113, 126, 130, 134, 147, 161, 172, 187, 202, 208, 246, 261, 273, 285, 302, 320, 432, 444, 503, 523, 525, 563, 666, 680, 709, 740, 757, 787, 902, 962, 964, 969, 1013, 1109, 1165, 1186, 1219, 1351, 1528, 1587, 1660, 1698, 1710, 1754, 1811, 1972
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Magma
    [n: n in [2..2000] |IsPrime((n^37 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
  • Mathematica
    Select[Range[2, 2000], PrimeQ[(#^37 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^37-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217077 Numbers n such that (n^41-1)/(n-1) is prime.

Original entry on oeis.org

14, 53, 55, 58, 71, 76, 82, 211, 248, 271, 296, 316, 430, 433, 439, 472, 545, 553, 555, 596, 663, 677, 682, 746, 814, 832, 885, 926, 947, 959, 1048, 1121, 1146, 1175, 1207, 1300, 1302, 1390, 1404, 1445, 1466, 1541, 1650, 1699, 1702, 1706, 1756, 1757, 1782, 1902
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Magma
    [n: n in [2..2000] |IsPrime((n^41 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
  • Mathematica
    Select[Range[2, 2000], PrimeQ[(#^41 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^41-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217078 Numbers n such that (n^43-1)/(n-1) is prime.

Original entry on oeis.org

15, 21, 26, 86, 89, 114, 123, 163, 180, 310, 332, 377, 409, 438, 448, 457, 477, 526, 534, 556, 586, 612, 653, 665, 690, 692, 709, 760, 783, 803, 821, 848, 877, 899, 909, 942, 981, 1041, 1042, 1043, 1066, 1068, 1069, 1106, 1126, 1139, 1197, 1310, 1386, 1476, 1561
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Magma
    [n: n in [2..1600] |IsPrime((n^43 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
  • Mathematica
    Select[Range[2, 1600], PrimeQ[(#^43 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^43-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217079 Numbers n such that (n^47-1)/(n-1) is prime.

Original entry on oeis.org

5, 17, 19, 55, 62, 75, 89, 98, 99, 132, 172, 186, 197, 220, 268, 278, 279, 288, 439, 443, 496, 579, 583, 587, 742, 777, 825, 911, 966, 1003, 1029, 1155, 1202, 1267, 1377, 1461, 1472, 1473, 1530, 1562, 1634, 1682, 1705, 1783, 1848, 1852, 1885, 1900, 1943, 1957
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Magma
    [n: n in [2..2000] |IsPrime((n^47 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
  • Mathematica
    Select[Range[2, 2000], PrimeQ[(#^47 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^47-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217080 Numbers n such that (n^53-1)/(n-1) is prime.

Original entry on oeis.org

24, 45, 60, 165, 235, 272, 285, 298, 307, 381, 416, 429, 623, 799, 858, 924, 929, 936, 1034, 1067, 1076, 1130, 1223, 1243, 1327, 1488, 1592, 1594, 1659, 1673, 1676, 1678, 1762, 1873, 1917, 1928, 1997, 2110, 2117, 2141, 2166, 2231, 2243, 2293, 2338, 2380, 2420
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Magma
    [n: n in [2..2450] |IsPrime((n^53 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
  • Mathematica
    Select[Range[2, 2500], PrimeQ[(#^53 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^53-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217081 Numbers n such that (n^59-1)/(n-1) is prime.

Original entry on oeis.org

19, 70, 102, 116, 126, 188, 209, 257, 294, 359, 451, 461, 468, 470, 638, 653, 710, 762, 766, 781, 824, 901, 939, 964, 995, 1036, 1047, 1098, 1150, 1211, 1234, 1243, 1256, 1278, 1389, 1401, 1422, 1436, 1454, 1492, 1523, 1639, 1703, 1705, 1826, 1913, 1915, 1978
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Magma
    [n: n in [2..2000] |IsPrime((n^59 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
  • Mathematica
    Select[Range[2, 2000], PrimeQ[(#^59 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^59-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217082 Numbers n such that (n^61-1)/(n-1) is prime.

Original entry on oeis.org

2, 19, 69, 88, 138, 155, 205, 234, 336, 420, 425, 455, 470, 525, 555, 561, 608, 626, 667, 674, 766, 779, 846, 851, 937, 971, 998, 1053, 1055, 1112, 1137, 1263, 1329, 1383, 1445, 1448, 1499, 1544, 1551, 1578, 1640, 1689, 1724, 1750, 1793, 1868, 2143, 2241, 2358
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Magma
    [n: n in [2..2400] |IsPrime((n^61 - 1) div (n - 1))]; // Vincenzo Librandi, Sep 28 2012
  • Mathematica
    Select[Range[2, 2400], PrimeQ[(#^61 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^61-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217083 Numbers n such that (n^67-1)/(n-1) is prime.

Original entry on oeis.org

46, 122, 238, 304, 314, 315, 328, 332, 346, 372, 382, 426, 440, 491, 496, 510, 524, 528, 566, 638, 733, 826, 1016, 1054, 1071, 1214, 1309, 1338, 1388, 1401, 1457, 1512, 1536, 1582, 1624, 1718, 1773, 1814, 1816, 1825, 1952, 1985, 2021, 2072, 2308, 2349, 2449, 2481
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Mathematica
    Select[Range[2, 2500], PrimeQ[(#^67 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^67-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217084 Numbers n such that (n^71-1)/(n-1) is prime.

Original entry on oeis.org

3, 6, 17, 24, 37, 89, 132, 374, 387, 402, 421, 435, 453, 464, 490, 516, 708, 736, 919, 947, 981, 1033, 1067, 1170, 1195, 1253, 1284, 1349, 1385, 1409, 1479, 1709, 1724, 1726, 1735, 1875, 1950, 1984, 2012, 2070, 2124, 2133, 2161, 2194, 2424, 2432, 2459, 2531, 2552
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Mathematica
    Select[Range[2, 1000], PrimeQ[(#^71 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^71-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012

A217085 Numbers n such that (n^73-1)/(n-1) is prime.

Original entry on oeis.org

11, 15, 75, 114, 195, 215, 295, 335, 378, 559, 566, 650, 660, 832, 871, 904, 966, 1021, 1112, 1203, 1334, 1433, 1485, 1724, 1822, 1959, 1998, 2115, 2154, 2432, 2465, 2486, 2544, 2559, 2564, 2575, 2611, 2681, 2705, 2735, 2754, 2806, 2880, 3158, 3222, 3306, 3368
Offset: 1

Views

Author

Tim Johannes Ohrtmann, Sep 26 2012

Keywords

Links

Crossrefs

Cf. A002384, A049409, A100330, A162862, A217070-A217089.

Programs

  • Mathematica
    Select[Range[2, 1000], PrimeQ[(#^73 - 1)/(# - 1)] &] (* T. D. Noe, Sep 26 2012 *)
  • PARI
    is(n)=isprime((n^73-1)/(n-1)) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from T. D. Noe, Sep 26 2012
Previous Showing 11-20 of 25 results. Next

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.