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.

A203372 Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

Table of values

n a(n)
1 12
2 164
3 5208
4 387324
5 67731264
6 27913330472
7 27149753088792
8 62383316832685348
9 338853014329060508760
10 4353185098169744392741448
11 132316928041105714306034574480
12 9518293354852895518368238072987352

List of values

[12, 164, 5208, 387324, 67731264, 27913330472, 27149753088792, 62383316832685348, 338853014329060508760, 4353185098169744392741448, 132316928041105714306034574480, 9518293354852895518368238072987352]

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

Content is available under The OEIS End-User License Agreement.