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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.

A250972 Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.

Table of values

n a(n)
1 26154
2 3090834
3 364210219
4 43025963570
5 5084110136919
6 600808386292820
7 71001116832347962
8 8390658772408694576
9 991579229128088199012
10 117181450181585451488011
11 13848104464047186015193590

List of values

[26154, 3090834, 364210219, 43025963570, 5084110136919, 600808386292820, 71001116832347962, 8390658772408694576, 991579229128088199012, 117181450181585451488011, 13848104464047186015193590]

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

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