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.

A186087 Number of (n+2)X(n+2) 0..4 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

Table of values

n a(n)
1 102251
2 22559052
3 4527262140
4 837192826927
5 142701733009836
6 22643128901373831
7 3389319838308873682
8 482195323502778740280
9 65081669155365981380613
10 8294413388145189171875895

List of values

[102251, 22559052, 4527262140, 837192826927, 142701733009836, 22643128901373831, 3389319838308873682, 482195323502778740280, 65081669155365981380613, 8294413388145189171875895]

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

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