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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.

A264466 Number of permutations of [n] with exactly seven (possibly overlapping) occurrences of the generalized pattern 23-1.

Table of values

n a(n)
6 1
7 111
8 2141
9 29066
10 336137
11 3663730
12 39037155
13 414003430
14 4414401391
15 47606401475
16 521147444815
17 5804080039932
18 65854473968668
19 761861585833395
20 8990938684395442
21 108258685340444377
22 1330041483208589743
23 16671576238569453924
24 213169773223813966680

List of values

[1, 111, 2141, 29066, 336137, 3663730, 39037155, 414003430, 4414401391, 47606401475, 521147444815, 5804080039932, 65854473968668, 761861585833395, 8990938684395442, 108258685340444377, 1330041483208589743, 16671576238569453924, 213169773223813966680]

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

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