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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.

A317329 Number of permutations of [n] with equal lengths of increasing runs.

Table of values

n a(n)
1 1
2 2
3 2
4 7
5 2
6 82
7 2
8 1456
9 1515
10 50774
11 2
12 3052874
13 2
14 199364414
15 136835794
16 19451901825
17 2
18 2510158074714
19 2
20 370671075758054
21 132705620239756
22 69348874393843334
23 2
24 15772160279898993782
25 613498040952503
26 4087072509293134292962
27 705927677748508225534

List of values

[1, 2, 2, 7, 2, 82, 2, 1456, 1515, 50774, 2, 3052874, 2, 199364414, 136835794, 19451901825, 2, 2510158074714, 2, 370671075758054, 132705620239756, 69348874393843334, 2, 15772160279898993782, 613498040952503, 4087072509293134292962, 705927677748508225534]

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

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