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.

A225966 Number of permutations of [n] having exactly 5 strong fixed blocks.

Table of values

n a(n)
13 1
14 17
15 187
16 1725
17 14770
18 123810
19 1049683
20 9201893
21 84765839
22 830632443
23 8737884632
24 99283914256
25 1222304625766
26 16308650537598
27 235329993989098
28 3658770788460622
29 61010416134839892
30 1085940325012439060
31 20537758641146194266
32 410995800089222969774

List of values

[1, 17, 187, 1725, 14770, 123810, 1049683, 9201893, 84765839, 830632443, 8737884632, 99283914256, 1222304625766, 16308650537598, 235329993989098, 3658770788460622, 61010416134839892, 1085940325012439060, 20537758641146194266, 410995800089222969774]

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

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