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.

A208168 Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically.

Table of values

n a(n)
1 31
2 961
3 6759
4 46611
5 258952
6 1493661
7 9072707
8 53874293
9 315713411
10 1874906825
11 11126711003
12 65771372274
13 389369462027
14 2306918088206
15 13657520785513
16 80855461760683
17 478802042582831
18 2835088280044468
19 16786245481948186

List of values

[31, 961, 6759, 46611, 258952, 1493661, 9072707, 53874293, 315713411, 1874906825, 11126711003, 65771372274, 389369462027, 2306918088206, 13657520785513, 80855461760683, 478802042582831, 2835088280044468, 16786245481948186]

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

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