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.

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A024373 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A023532, t = A000201 (lower Wythoff sequence).

Original entry on oeis.org

1, 3, 4, 6, 12, 15, 25, 29, 34, 39, 52, 60, 77, 84, 106, 115, 125, 135, 160, 172, 199, 213, 245, 259, 295, 310, 326, 343, 383, 400, 443, 463, 510, 531, 580, 603, 656, 680, 704, 729, 787, 812, 874, 901, 965, 995, 1061, 1093, 1164, 1196, 1270, 1303, 1337, 1372, 1450, 1486
Offset: 1

Views

Author

Clark Kimberling

Keywords

A024374 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A023532, t = A001950 (upper Wythoff sequence).

Original entry on oeis.org

2, 5, 7, 10, 20, 25, 41, 48, 56, 64, 86, 98, 126, 138, 173, 188, 204, 220, 261, 280, 325, 347, 399, 422, 480, 505, 531, 558, 623, 651, 721, 753, 829, 863, 943, 980, 1066, 1105, 1144, 1184, 1278, 1319, 1419, 1463, 1567, 1615, 1723, 1774, 1889, 1941, 2061, 2115, 2170
Offset: 1

Views

Author

Clark Kimberling

Keywords

A024376 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A023532, t = A014306.

Original entry on oeis.org

0, 1, 1, 0, 2, 1, 2, 3, 3, 2, 4, 3, 4, 5, 5, 5, 5, 6, 6, 6, 8, 7, 8, 9, 9, 9, 9, 10, 10, 10, 11, 11, 13, 12, 12, 13, 13, 13, 15, 14, 15, 15, 17, 16, 17, 17, 18, 19, 19, 19, 20, 20, 20, 21, 21, 20, 22, 21, 22, 23, 24, 23, 24, 25, 25, 25, 26, 26, 28, 27, 28, 28, 29, 29, 31, 30, 31, 31, 32, 32, 33, 34, 34, 33
Offset: 1

Views

Author

Clark Kimberling

Keywords

A024856 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = A023532.

Original entry on oeis.org

0, 1, 3, 2, 4, 3, 6, 9, 13, 12, 17, 16, 21, 19, 25, 32, 40, 39, 47, 45, 54, 52, 62, 60, 71, 82, 94, 92, 105, 103, 117, 115, 130, 127, 142, 139, 155, 172, 190, 188, 207, 205, 224, 221, 241, 238, 259, 256, 278, 275, 298, 322, 346, 343, 368, 365, 391, 388, 415, 412, 440, 437, 466
Offset: 2

Views

Author

Clark Kimberling

Keywords

A024871 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers >= 2), t = A023532.

Original entry on oeis.org

0, 2, 5, 3, 6, 5, 9, 12, 17, 16, 22, 21, 26, 24, 31, 39, 48, 47, 55, 53, 63, 61, 72, 70, 82, 93, 106, 104, 118, 116, 131, 129, 145, 141, 157, 154, 171, 189, 208, 206, 226, 224, 243, 240, 261, 258, 280, 277, 300, 297, 321, 346, 370, 367, 393, 390, 417, 414, 442, 439, 468, 465, 495
Offset: 2

Views

Author

Clark Kimberling

Keywords

A025066 a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ] and s = A023532.

Original entry on oeis.org

0, 1, 1, 0, 2, 1, 2, 2, 3, 2, 3, 4, 3, 4, 4, 5, 6, 5, 5, 6, 7, 6, 8, 7, 8, 8, 10, 8, 9, 10, 10, 11, 11, 11, 12, 11, 12, 14, 14, 13, 14, 15, 14, 15, 16, 15, 18, 16, 17, 17, 19, 19, 19, 19, 19, 20, 21, 20, 21, 22, 23, 23, 23, 22, 24, 24, 24, 26, 26, 25, 26, 28, 27, 27, 28, 27, 31, 28, 30, 30, 30, 30, 32, 32
Offset: 1

Views

Author

Clark Kimberling

Keywords

A025070 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = (composite numbers).

Original entry on oeis.org

6, 8, 9, 10, 21, 24, 37, 42, 47, 51, 69, 75, 96, 102, 126, 135, 142, 150, 178, 187, 217, 227, 259, 272, 307, 319, 332, 345, 385, 401, 443, 457, 503, 522, 568, 587, 636, 656, 675, 693, 747, 769, 825, 847, 906, 929, 991, 1016, 1079, 1105, 1172, 1201, 1230, 1256, 1324, 1354
Offset: 1

Views

Author

Clark Kimberling

Keywords

A025071 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = (F(2), F(3), F(4), ...).

Original entry on oeis.org

2, 3, 5, 8, 18, 29, 55, 89, 144, 233, 398, 644, 1076, 1741, 2872, 4647, 7519, 12166, 19829, 32084, 52146, 84374, 136897, 221504, 359011, 580892, 939903, 1520795, 2462295, 3984077, 6448956, 10434630, 16887767, 27324981, 44219513, 71548675, 115779134, 187334574, 303113708
Offset: 1

Views

Author

Clark Kimberling

Keywords

Extensions

More terms from Sean A. Irvine, Aug 05 2019

A025072 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = (odd natural numbers).

Original entry on oeis.org

3, 5, 7, 9, 18, 22, 35, 41, 47, 53, 72, 80, 103, 113, 140, 152, 164, 176, 209, 223, 260, 276, 317, 335, 380, 400, 420, 440, 491, 513, 568, 592, 651, 677, 740, 768, 835, 865, 895, 925, 998, 1030, 1107, 1141, 1222, 1258, 1343, 1381, 1470, 1510, 1603, 1645, 1687, 1729, 1828
Offset: 1

Views

Author

Clark Kimberling

Keywords

Crossrefs

Cf. A023532.

A025073 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = A000201 (lower Wythoff sequence).

Original entry on oeis.org

3, 4, 6, 8, 15, 19, 29, 34, 39, 43, 60, 66, 84, 94, 115, 125, 135, 144, 172, 182, 213, 226, 259, 274, 310, 326, 343, 359, 400, 418, 463, 483, 531, 551, 603, 626, 680, 704, 729, 754, 812, 839, 901, 928, 995, 1023, 1093, 1124, 1196, 1228, 1303, 1337, 1372, 1405, 1486, 1521, 1605
Offset: 1

Views

Author

Clark Kimberling

Keywords

Previous Showing 31-40 of 56 results. Next

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