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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.

A317286 Number of permutations of [n] with exactly six increasing runs of even length.

Table of values

n a(n)
12 2702765
13 117248463
14 3118257980
15 73830310655
16 1708350797975
17 38581706239634
18 861226758827324
19 19346584353278646
20 439935779491790415
21 10146028258663315691
22 238129724283103648476
23 5701793180421505562215
24 139409020095464012520967
25 3483089247393778028230622

List of values

[2702765, 117248463, 3118257980, 73830310655, 1708350797975, 38581706239634, 861226758827324, 19346584353278646, 439935779491790415, 10146028258663315691, 238129724283103648476, 5701793180421505562215, 139409020095464012520967, 3483089247393778028230622]

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

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