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.

A209682 Number of n X n 0..7 arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.

Table of values

n a(n)
1 1
2 15
3 1551
4 13575355
5 584728215424
6 1568091719977974635
7 8230385298024619110939311
8 2126394147054521999411737472214659
9 1020701618427502395624813185662022237910866

List of values

[1, 15, 1551, 13575355, 584728215424, 1568091719977974635, 8230385298024619110939311, 2126394147054521999411737472214659, 1020701618427502395624813185662022237910866]

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

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