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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.

A264324 Number of permutations of [n] with exactly five (possibly overlapping) occurrences of the consecutive pattern 3412.

Table of values

n a(n)
12 1
13 150
14 17956
15 1354134
16 74605701
17 3373438200
18 134999600212
19 5013535378432
20 178086394182356
21 6171760208699812
22 211481116147026848
23 7230935446550288908
24 248287682074519332846
25 8600459778995519305416
26 301511114563838537243472
27 10722994509016940787519096

List of values

[1, 150, 17956, 1354134, 74605701, 3373438200, 134999600212, 5013535378432, 178086394182356, 6171760208699812, 211481116147026848, 7230935446550288908, 248287682074519332846, 8600459778995519305416, 301511114563838537243472, 10722994509016940787519096]

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

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