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.

A203374 Number of (n+1) X 5 0..1 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.

Table of values

n a(n)
1 324
2 3412
3 36300
4 387324
5 4136292
6 44183028
7 471988172
8 5042151644
9 53864590276
10 575428804372
11 6147238485228
12 65670238411324
13 701547599923492
14 7494552376793140
15 80063441950649100
16 855308552375931036

List of values

[324, 3412, 36300, 387324, 4136292, 44183028, 471988172, 5042151644, 53864590276, 575428804372, 6147238485228, 65670238411324, 701547599923492, 7494552376793140, 80063441950649100, 855308552375931036]

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

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