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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A249438 Sequence A249437 sorted, with duplicates removed.

Original entry on oeis.org

7, 23, 25, 35, 41, 47, 49, 67, 89, 97, 113, 119, 120, 131, 139, 168, 181, 188, 209, 233, 241, 259, 265, 288, 309, 329, 337, 357, 409, 449, 461, 463, 493, 501, 515, 528, 548, 571, 577, 601, 649, 656, 681, 709, 721, 791, 805, 837, 840, 895, 901, 919, 961, 977, 995, 1009
Offset: 1

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Author

Antti Karttunen, Nov 03 2014

Keywords

Comments

These terms are the ordinates of "stray points" (listed by their order of magnitude) in the scatter plot of A249151, in the sparsely populated region between the two topmost rays which have slopes 1 and 1/2: A249434 (A006093) and A249424.

Crossrefs

A249436 Integers n such that n/2 < A249151(n) < n.

Original entry on oeis.org

11, 29, 44, 55, 59, 69, 71, 111, 119, 125, 139, 188, 215, 223, 230, 233, 239, 251, 324, 335, 349, 351, 447, 458, 474, 479, 493, 494, 503, 509, 560, 593, 599, 647, 662, 701, 714, 719, 831, 835, 849, 895, 956, 959, 979, 991, 1000, 1007, 1019, 1034, 1063, 1077, 1169, 1224, 1319, 1322, 1364, 1376, 1424, 1427, 1448, 1507
Offset: 1

Views

Author

Antti Karttunen, Nov 02 2014

Keywords

Comments

Integers n such that A001142(n) [product of elements on row n of Pascal's triangle] is divisible by floor[(n+1)/2]! but not by n!
These are the abscissas of "stray points" in the sparsely populated region between the two topmost rays visible in the scatter plot of A249151 which have slopes 1 and 1/2: A249434 (A006093) and A249424.

Crossrefs

A249437 gives the corresponding values at those points.
Subsequence of A249433.
Showing 1-2 of 2 results.