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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.

A264467 Number of permutations of [n] with exactly eight (possibly overlapping) occurrences of the generalized pattern 23-1.

Table of values

n a(n)
7 55
8 1393
9 22180
10 290341
11 3443222
12 39212955
13 439762906
14 4922646194
15 55440198721
16 631281758915
17 7290146619344
18 85550258610256
19 1021466597564828
20 12418915430929303
21 153814790549535203
22 1941191617618161308
23 24964754218212162461
24 327159226788279647296

List of values

[55, 1393, 22180, 290341, 3443222, 39212955, 439762906, 4922646194, 55440198721, 631281758915, 7290146619344, 85550258610256, 1021466597564828, 12418915430929303, 153814790549535203, 1941191617618161308, 24964754218212162461, 327159226788279647296]

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

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