cp's OEIS Frontend

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.

A250951 Number of (n+1) X (3+1) 0..1 arrays with no 2 X 2 subblock having its maximum diagonal element less than its minimum antidiagonal element.

Table of values

n a(n)
1 209
2 2744
3 36016
4 472712
5 6204344
6 81431944
7 1068793208
8 14027896712
9 184115958136
10 2416519505288
11 31716786410360
12 416282400363400
13 5463700975560056
14 71711002733396360
15 941205958384596856

List of values

[209, 2744, 36016, 472712, 6204344, 81431944, 1068793208, 14027896712, 184115958136, 2416519505288, 31716786410360, 416282400363400, 5463700975560056, 71711002733396360, 941205958384596856]

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

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