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.

A268778 Number of nX5 binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.

Table of values

n a(n)
1 23
2 148
3 1031
4 6383
5 38483
6 224960
7 1288693
8 7271509
9 40511381
10 223527424
11 1223021243
12 6646278717
13 35903716877
14 192977652868
15 1032630435883
16 5504232072227
17 29238119105311
18 154834459041646
19 817685821067843

List of values

[23, 148, 1031, 6383, 38483, 224960, 1288693, 7271509, 40511381, 223527424, 1223021243, 6646278717, 35903716877, 192977652868, 1032630435883, 5504232072227, 29238119105311, 154834459041646, 817685821067843]

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

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