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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.

A317129 Number of permutations of [n] whose lengths of increasing runs are squares.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 9
6 40
7 151
8 571
9 2897
10 19730
11 140190
12 953064
13 6708323
14 54631552
15 510143776
16 4987278692
17 49168919669
18 505209884549
19 5638095015594
20 67921924172174
21 852861260421398
22 10992380368532792
23 147296144926635359
24 2082906807168675698
25 30973237281668975230

List of values

[1, 1, 1, 1, 2, 9, 40, 151, 571, 2897, 19730, 140190, 953064, 6708323, 54631552, 510143776, 4987278692, 49168919669, 505209884549, 5638095015594, 67921924172174, 852861260421398, 10992380368532792, 147296144926635359, 2082906807168675698, 30973237281668975230]

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

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