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.

A242547 Number of length n+3 0..6 arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..6 introduced in 0..6 order.

Table of values

n a(n)
1 13
2 43
3 166
4 712
5 3339
6 16968
7 92360
8 532175
9 3210136
10 20066475
11 128848615
12 843831762
13 5605476437
14 37615886287
15 254237240993
16 1726996739311
17 11772647808288
18 80450209850112
19 550717024856208
20 3774443585348691

List of values

[13, 43, 166, 712, 3339, 16968, 92360, 532175, 3210136, 20066475, 128848615, 843831762, 5605476437, 37615886287, 254237240993, 1726996739311, 11772647808288, 80450209850112, 550717024856208, 3774443585348691]

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

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