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.

A207839 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically.

Table of values

n a(n)
1 2
2 16
3 72
4 780
5 10144
6 181896
7 5346600
8 235865752
9 13718515360
10 1274547293612
11 182632256870400
12 35910248805192512
13 10519355362828229320
14 4986223632232028372840
15 3295839087283933350008520

List of values

[2, 16, 72, 780, 10144, 181896, 5346600, 235865752, 13718515360, 1274547293612, 182632256870400, 35910248805192512, 10519355362828229320, 4986223632232028372840, 3295839087283933350008520]

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

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