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.

A187702 Number of (n+1) X (n+1) 0..3 arrays with each 2 X 2 subblock off diagonal and antidiagonal nonsingular and the array of 2 X 2 subblock determinants antisymmetric about the diagonal and antidiagonal.

Table of values

n a(n)
1 64
2 8272
3 322
4 81456
5 530
6 230446

List of values

[64, 8272, 322, 81456, 530, 230446]

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

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