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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.

A230189 Number of 6Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).

Table of values

n a(n)
1 0
2 2049
3 143451
4 34825803
5 7303192425
6 1576417829097
7 337613109419463
8 72442679020274343
9 15538191696598121541
10 3333031870313982444195
11 714944148431332304491227
12 153357839247813109681299999

List of values

[0, 2049, 143451, 34825803, 7303192425, 1576417829097, 337613109419463, 72442679020274343, 15538191696598121541, 3333031870313982444195, 714944148431332304491227, 153357839247813109681299999]

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

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