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.

A242548 Number of length n+3 0..7 arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..7 introduced in 0..7 order.

Table of values

n a(n)
1 13
2 43
3 166
4 712
5 3340
6 17004
7 93103
8 543773
9 3362689
10 21854355
11 148145552
12 1039764960
13 7504319914
14 55361803579
15 415379230159
16 3156808241415
17 24223346602916
18 187213792659552
19 1454634743756302
20 11346966341306231

List of values

[13, 43, 166, 712, 3340, 17004, 93103, 543773, 3362689, 21854355, 148145552, 1039764960, 7504319914, 55361803579, 415379230159, 3156808241415, 24223346602916, 187213792659552, 1454634743756302, 11346966341306231]

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

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