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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.

A264496 Number of permutations of [n] with exactly nine (possibly overlapping) occurrences of the generalized pattern 13-2.

Table of values

n a(n)
7 1
8 256
9 11115
10 258564
11 4235959
12 55145400
13 609428105
14 5954337792
15 52838734860
16 433992926048
17 3345094317796
18 24447556164496
19 170782982829160
20 1147577406468288
21 7455096381483206
22 47017233051466444
23 288854847620573814
24 1733658007070671968
25 10189610103251200265

List of values

[1, 256, 11115, 258564, 4235959, 55145400, 609428105, 5954337792, 52838734860, 433992926048, 3345094317796, 24447556164496, 170782982829160, 1147577406468288, 7455096381483206, 47017233051466444, 288854847620573814, 1733658007070671968, 10189610103251200265]

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

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