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.

A303240 Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 65
3 56
4 149
5 1373
6 7823
7 41878
8 277018
9 1721671
10 10607292
11 67278868
12 424616777
13 2676699369
14 16945268476
15 107280325551
16 679285054896
17 4304451618590
18 27282048865071
19 172940738855024
20 1096476824922147
21 6952546132868710

List of values

[1, 65, 56, 149, 1373, 7823, 41878, 277018, 1721671, 10607292, 67278868, 424616777, 2676699369, 16945268476, 107280325551, 679285054896, 4304451618590, 27282048865071, 172940738855024, 1096476824922147, 6952546132868710]

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

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