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.

A269113 Number of sequences with 3 copies each of 1,2,...,n avoiding the pattern 12...n.

Table of values

n a(n)
0 0
1 0
2 1
3 374
4 173891
5 117392909
6 117108036719
7 171248808285596
8 360953073372968159
9 1072323973643442736211
10 4376906243609822466600689
11 23919710914189027455648239834
12 170865299381465355439286870245691
13 1561721420156259852074018974532765369

List of values

[0, 0, 1, 374, 173891, 117392909, 117108036719, 171248808285596, 360953073372968159, 1072323973643442736211, 4376906243609822466600689, 23919710914189027455648239834, 170865299381465355439286870245691, 1561721420156259852074018974532765369]

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

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