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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.

A251248 Number of (n+1)X(7+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 24095475
2 91345992921
3 345878548314469
4 1309640978922956217
5 4958824382557190011939
6 18776074467676820865893649
7 71093648993125363900542904561
8 269188685349250291174788288004161

List of values

[24095475, 91345992921, 345878548314469, 1309640978922956217, 4958824382557190011939, 18776074467676820865893649, 71093648993125363900542904561, 269188685349250291174788288004161]

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

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