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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.

A301444 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 8
3 171
4 9541
5 1423344
6 564002959
7 592006690060
8 1646995545166039
9 12145346382857661327
10 237428255410557186948107

List of values

[1, 8, 171, 9541, 1423344, 564002959, 592006690060, 1646995545166039, 12145346382857661327, 237428255410557186948107]

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

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