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.

A185426 Number of (n+2)X(n+2) 0..7 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

Table of values

n a(n)
1 6842284
2 21536560306
3 84722449466168
4 378372621022753476
5 1812817799965228636502
6 9008824580891342846197566
7 45497009931939204350899288292

List of values

[6842284, 21536560306, 84722449466168, 378372621022753476, 1812817799965228636502, 9008824580891342846197566, 45497009931939204350899288292]

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

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