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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.

A284198 Number of n X 7 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Table of values

n a(n)
1 33
2 1611
3 105367
4 14392557
5 1321614728
6 178138187113
7 18564422929880
8 2429325477564655
9 271315506003954612
10 34775052300161919967
11 4048381878219586826112
12 512565378120434864463849

List of values

[33, 1611, 105367, 14392557, 1321614728, 178138187113, 18564422929880, 2429325477564655, 271315506003954612, 34775052300161919967, 4048381878219586826112, 512565378120434864463849]

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

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