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.

A303323 Number of nX6 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 32
3 1
4 10
5 25
6 56
7 136
8 531
9 1035
10 3668
11 11020
12 29763
13 88919
14 263974
15 759319
16 2234940
17 6528470
18 19011183
19 55808342
20 163149056
21 476147024
22 1393878718
23 4076631347
24 11916304345
25 34854245923
26 101919861889
27 298028780792

List of values

[1, 32, 1, 10, 25, 56, 136, 531, 1035, 3668, 11020, 29763, 88919, 263974, 759319, 2234940, 6528470, 19011183, 55808342, 163149056, 476147024, 1393878718, 4076631347, 11916304345, 34854245923, 101919861889, 298028780792]

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

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