cp's OEIS Frontend

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.

A120815 Number of permutations of length n with exactly 7 occurrences of the pattern 2-13.

Table of values

n a(n)
7 42
8 1664
9 33338
10 468200
11 5253864
12 50442128
13 431645370
14 3380738400
15 24682378500
16 170201240352
17 1119398566704
18 7074531999584
19 43215257135312
20 256343213520000
21 1482127305153560
22 8378542979807616
23 46428426576857886

List of values

[42, 1664, 33338, 468200, 5253864, 50442128, 431645370, 3380738400, 24682378500, 170201240352, 1119398566704, 7074531999584, 43215257135312, 256343213520000, 1482127305153560, 8378542979807616, 46428426576857886]

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

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