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.

A203376 Number of (n+1)X7 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

Table of values

n a(n)
1 2916
2 70996
3 1764360
4 44183028
5 1109832180
6 27913330472
7 702420750924
8 17679917387404
9 445045123432096
10 11203277447970636
11 282028756620227124
12 7099777698513424920
13 178729975670304808348
14 4499358353656818662428

List of values

[2916, 70996, 1764360, 44183028, 1109832180, 27913330472, 702420750924, 17679917387404, 445045123432096, 11203277447970636, 282028756620227124, 7099777698513424920, 178729975670304808348, 4499358353656818662428]

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

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