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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.

A251244 Number of (n+1)X(3+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 5139
2 327753
3 20904689
4 1333268433
5 85032883789
6 5423196612609
7 345878548314469
8 22059307525808241
9 1406889917539387453
10 89728076602595409057
11 5722642281407762900517
12 364976447934805630538193

List of values

[5139, 327753, 20904689, 1333268433, 85032883789, 5423196612609, 345878548314469, 22059307525808241, 1406889917539387453, 89728076602595409057, 5722642281407762900517, 364976447934805630538193]

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

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