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.

A187708 Number of 5X5 0..n arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.

Table of values

n a(n)
1 34
2 5030
3 81456
4 875696
5 4225652
6 22532156
7 67940472
8 225606354
9 577091334
10 1469652502

List of values

[34, 5030, 81456, 875696, 4225652, 22532156, 67940472, 225606354, 577091334, 1469652502]

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

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