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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.

A184371 1/3 the number of (n+1) X 5 0..2 arrays with every 2 X 2 subblock having at least two equal elements connected horizontally or vertically.

Table of values

n a(n)
1 8019
2 880781
3 95528423
4 10378244309
5 1127256514575
6 122443114867993
7 13299774554091575
8 1444622701339019869
9 156915034606615850427
10 17044123945719790186817
11 1851334139596041020316331

List of values

[8019, 880781, 95528423, 10378244309, 1127256514575, 122443114867993, 13299774554091575, 1444622701339019869, 156915034606615850427, 17044123945719790186817, 1851334139596041020316331]

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

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