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.

A207494 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.

Table of values

n a(n)
1 2
2 16
3 102
4 1004
5 14253
6 237576
7 5715255
8 163471950
9 6200122170
10 294261603282
11 17977383927693
12 1375335087129521
13 138833395825965196
14 17233401412131428885
15 2924391663494366576782
16 600552802391087361313757

List of values

[2, 16, 102, 1004, 14253, 237576, 5715255, 163471950, 6200122170, 294261603282, 17977383927693, 1375335087129521, 138833395825965196, 17233401412131428885, 2924391663494366576782, 600552802391087361313757]

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

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