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.

A269114 Number of sequences with 4 copies each of 1,2,...,n avoiding the pattern 12...n.

Table of values

n a(n)
0 0
1 0
2 1
3 3199
4 16140983
5 142951955371
6 2169397142273171
7 54391509124298646609
8 2179159866745975811590271
9 135383475007869462606521105767
10 12672963300072129619006691134123819
11 1737368296284036324230735297513232295869

List of values

[0, 0, 1, 3199, 16140983, 142951955371, 2169397142273171, 54391509124298646609, 2179159866745975811590271, 135383475007869462606521105767, 12672963300072129619006691134123819, 1737368296284036324230735297513232295869]

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

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