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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.

A251242 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements.

Table of values

n a(n)
1 75
2 14265
3 20904689
4 236035946835
5 20534495636679387
6 13764744150100667222985
7 71093648993125363900542904561
8 2829255370682961509218005180234886323

List of values

[75, 14265, 20904689, 236035946835, 20534495636679387, 13764744150100667222985, 71093648993125363900542904561, 2829255370682961509218005180234886323]

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

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