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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.

A100355 Maximal number of 15432 patterns in a permutation of 1,2,...,n.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 1
6 5
7 15
8 35
9 70
10 140
11 252
12 420
13 660
14 990
15 1485
16 2145
17 3003
18 4095
19 5460
20 7280
21 9520
22 12240
23 15504
24 19381
25 24226
26 29926
27 36576
28 44276
29 53135
30 63761
31 75905
32 89705
33 105305
34 122865
35 143340
36 166272
37 191850
38 220270
39 251755
40 287715
41 327395
42 371043

List of values

[0, 0, 0, 0, 1, 5, 15, 35, 70, 140, 252, 420, 660, 990, 1485, 2145, 3003, 4095, 5460, 7280, 9520, 12240, 15504, 19381, 24226, 29926, 36576, 44276, 53135, 63761, 75905, 89705, 105305, 122865, 143340, 166272, 191850, 220270, 251755, 287715, 327395, 371043]

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

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