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.

Showing 1-7 of 7 results.

A212455 a(n) = floor(2n*log(2n)).

Original entry on oeis.org

1, 5, 10, 16, 23, 29, 36, 44, 52, 59, 68, 76, 84, 93, 102, 110, 119, 129, 138, 147, 156, 166, 176, 185, 195, 205, 215, 225, 235, 245, 255, 266, 276, 286, 297, 307, 318, 329, 339, 350, 361, 372, 383, 394, 404, 416, 427
Offset: 1

Views

Author

Mohammad K. Azarian, May 31 2012

Keywords

Links

Crossrefs

Cf. A050502, A050504, A212456, A212457, A212458, A212459, A212460, A212461, A212462.

Programs

  • Derive
    PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(FLOOR(2·x·LOG(2·x)), y), x := x - 1))
  • Magma
    [Floor(2*n*Log(2*n)): n in [1..80]]; // Vincenzo Librandi, Feb 13 2013
  • Mathematica
    Table[Floor[2*n*Log[2*n]], {n, 60}] (* Vincenzo Librandi, Feb 13 2013 *)
  • PARI
    a(n)=2*n*log(2*n)\1 \\ Charles R Greathouse IV, Sep 04 2015

A212457 a(n) = floor(4n*log(4n)).

Original entry on oeis.org

5, 16, 29, 44, 59, 76, 93, 110, 129, 147, 166, 185, 205, 225, 245, 266, 286, 307, 329, 350, 372, 394, 416, 438, 460, 483, 505, 528, 551, 574, 597, 621, 644, 668, 691, 715, 739, 763, 787, 812, 836, 860, 885, 910, 934
Offset: 1

Views

Author

Mohammad K. Azarian, May 31 2012

Keywords

Links

Crossrefs

Cf. A050502, A050504, A212455, A212456, A212458, A212459, A212460, A212461, A212462.

Programs

  • Derive
    PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(FLOOR(4·x·LOG(4·x)), y), x := x - 1))
  • Magma
    [Floor(4*n*Log(4*n)): n in [1..80]]; // Vincenzo Librandi, Feb 13 2013
  • Mathematica
    Table[Floor[4*n*Log[4*n]], {n, 80}] (* Vincenzo Librandi, Feb 13 2013 *)
  • PARI
    a(n)=4*n*log(4*n)\1 \\ Charles R Greathouse IV, Sep 04 2015

A212458 a(n) = floor(5n*log(5n)).

Original entry on oeis.org

8, 23, 40, 59, 80, 102, 124, 147, 171, 195, 220, 245, 271, 297, 323, 350, 377, 404, 432, 460, 488, 517, 545, 574, 603, 632, 662, 691, 721, 751, 781, 812, 842, 873, 903, 934, 965, 996, 1028, 1059, 1091, 1122, 1154, 1186
Offset: 1

Views

Author

Mohammad K. Azarian, May 31 2012

Keywords

Links

Crossrefs

Cf. A050502, A050504, A212455, A212456, A212457, A212459, A212460, A212461, A212462.

Programs

  • Derive
    PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(FLOOR(5·x·LOG(5·x)), y), x := x - 1))
  • Magma
    [Floor(5*n*Log(5*n)): n in [1..80]]; // Vincenzo Librandi, Feb 13 2013
  • Mathematica
    Table[Floor[5*n*Log[5*n]], {n, 80}] (* Vincenzo Librandi, Feb 13 2013 *)
  • PARI
    a(n)=5*n*log(5*n)\1 \\ Charles R Greathouse IV, Sep 04 2015

A212459 a(n) = ceiling(2n*log(2n)).

Original entry on oeis.org

2, 6, 11, 17, 24, 30, 37, 45, 53, 60, 69, 77, 85, 94, 103, 111, 120, 130, 139, 148, 157, 167, 177, 186, 196, 206, 216, 226, 236, 246, 256, 267, 277, 287, 298, 308, 319, 330, 340, 351, 362, 373, 384, 395, 405, 417, 428
Offset: 1

Views

Author

Mohammad K. Azarian, May 31 2012

Keywords

Links

Crossrefs

Cf. A050502, A050504, A212455, A212456, A212457, A212458, A212460, A212461, A212462.

Programs

  • Derive
    PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(CEILING(2·x·LOG(2·x)), y), x := x - 1))
  • Magma
    [Ceiling(2*n*Log(2*n)): n in [1..80]]; // Vincenzo Librandi, Feb 13 2013
  • Mathematica
    Table[Ceiling[2*n*Log[2*n]], {n, 80}] (* Vincenzo Librandi, Feb 13 2013 *)
  • PARI
    a(n) = ceil(2*n*log(2*n)); \\ Michel Marcus, Jan 11 2016

Formula

a(n) = A050502(2*n). - Michel Marcus, Jan 11 2016

A212460 a(n) = ceiling(3n*log(3n)).

Original entry on oeis.org

4, 11, 20, 30, 41, 53, 64, 77, 89, 103, 116, 130, 143, 157, 172, 186, 201, 216, 231, 246, 262, 277, 293, 308, 324, 340, 356, 373, 389, 405, 422, 439, 455, 472, 489, 506, 523, 540, 558, 575, 592, 610, 627, 645, 663, 680
Offset: 1

Views

Author

Mohammad K. Azarian, May 31 2012

Keywords

Links

Crossrefs

Cf. A050502, A050504, A212455, A212456, A212457, A212458, A212459, A212461, A212462.

Programs

  • Derive
    PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(CEILING(3·x·LOG(3·x)), y), x := x - 1))
  • Magma
    [Ceiling(3*n*Log(3*n)): n in [1..80]]; // Vincenzo Librandi, Feb 13 2013
  • Mathematica
    Table[Ceiling[3*n*Log[3*n]], {n, 80}] (* Vincenzo Liobrandi, Feb 13 2013 *)
  • PARI
    a(n) = ceil(3*n*log(3*n)); \\ Michel Marcus, Jan 11 2016

Formula

a(n) = A050502(3*n). - Michel Marcus, Jan 11 2016

A212461 a(n) = ceiling(4n*log(4n)).

Original entry on oeis.org

6, 17, 30, 45, 60, 77, 94, 111, 130, 148, 167, 186, 206, 226, 246, 267, 287, 308, 330, 351, 373, 395, 417, 439, 461, 484, 506, 529, 552, 575, 598, 622, 645, 669, 692, 716, 740, 764, 788, 813, 837, 861, 886, 911, 935
Offset: 1

Views

Author

Mohammad K. Azarian, May 31 2012

Keywords

Links

Crossrefs

Cf. A050502, A050504, A212455, A212456, A212457, A212458, A212459, A212460, A212462.

Programs

  • Derive
    PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(CEILING(4·x·LOG(4·x)), y), x := x - 1))
  • Magma
    [Ceiling(4*n*Log(4*n)): n in [1..80]]; // Vincenzo Librandi, Feb 13 2013
  • Mathematica
    Table[Ceiling[4*n*Log[4*n]], {n, 80}] (* Vincenzo Librandi, Feb 13 2013 *)
  • PARI
    a(n) = ceil(4*n*log(4*n)); \\ Michel Marcus, Jan 11 2016

Formula

a(n) = A050502(4*n). - Michel Marcus, Jan 11 2016

A212462 a(n) = ceiling(5n*log(5n)).

Original entry on oeis.org

9, 24, 41, 60, 81, 103, 125, 148, 172, 196, 221, 246, 272, 298, 324, 351, 378, 405, 433, 461, 489, 518, 546, 575, 604, 633, 663, 692, 722, 752, 782, 813, 843, 874, 904, 935, 966, 997, 1029, 1060, 1092, 1123, 1155
Offset: 1

Views

Author

Mohammad K. Azarian, May 31 2012

Keywords

Links

Crossrefs

Cf. A050502, A050504, A212455, A212456, A212457, A212458, A212459, A212460, A212461.

Programs

  • Derive
    PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(CEILING(5·x·LOG(5·x)), y), x := x - 1))
  • Magma
    [Ceiling(5*n*Log(5*n)): n in [1..80]]; // Vincenzo Librandi, Feb 14 2013
  • Mathematica
    Table[Ceiling[5*n*Log[5*n]], {n, 80}] (* Vincenzo Librandi, Feb 14 2013 *)
  • PARI
    a(n) = ceil(5*n*log(5*n)); \\ Michel Marcus, Jan 11 2016

Formula

a(n) = A050502(5*n). - Michel Marcus, Jan 11 2016
Showing 1-7 of 7 results.

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