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.

A209679 Number of n X n 0..4 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 1243
4 2143147
5 6713848491
6 336865786047147
7 29579506766774446763
8 41557077253870074781674155
9 102173227506131465827954312522411
10 4019288788864555869108044364449353214635

List of values

[1, 15, 1243, 2143147, 6713848491, 336865786047147, 29579506766774446763, 41557077253870074781674155, 102173227506131465827954312522411, 4019288788864555869108044364449353214635]

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

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