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.

A230186 Number of 3Xn 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 33
3 231
4 3411
5 44487
6 596973
7 7957785
8 106248147
9 1418070843
10 18928121865
11 252644742093
12 3372208415751
13 45010959441111
14 600789299156241
15 8019108619691037
16 107036033204372163
17 1428676544542445175

List of values

[0, 33, 231, 3411, 44487, 596973, 7957785, 106248147, 1418070843, 18928121865, 252644742093, 3372208415751, 45010959441111, 600789299156241, 8019108619691037, 107036033204372163, 1428676544542445175]

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

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