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.

A303044 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 32
2 42
3 186
4 544
5 2494
6 13597
7 59654
8 251705
9 1186522
10 5869222
11 27381443
12 126165687
13 604239638
14 2948606295
15 14144665365
16 67469024030
17 326726182958
18 1595597953024
19 7746571268500
20 37522290645262
21 182886057727441

List of values

[32, 42, 186, 544, 2494, 13597, 59654, 251705, 1186522, 5869222, 27381443, 126165687, 604239638, 2948606295, 14144665365, 67469024030, 326726182958, 1595597953024, 7746571268500, 37522290645262, 182886057727441]

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

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