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.

A209587 Number of n X n 0..2 arrays with every element equal to a diagonal or antidiagonal reflection.

Table of values

n a(n)
1 3
2 81
3 3645
4 1476225
5 996451875
6 6053445140625
7 61291132048828125
8 5585154407949462890625
9 848245325707324676513671875
10 1159445329576199417209625244140625

List of values

[3, 81, 3645, 1476225, 996451875, 6053445140625, 61291132048828125, 5585154407949462890625, 848245325707324676513671875, 1159445329576199417209625244140625]

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

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