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.

A232311 Number of (n+1)X(3+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero.

Table of values

n a(n)
1 16
2 139
3 1202
4 10409
5 90157
6 780922
7 6764246
8 58591124
9 507509767
10 4395993154
11 38077604237
12 329823977717
13 2856898655026
14 24746138781034
15 214348305112232
16 1856661207278099
17 16082193123986242
18 139302170295461137

List of values

[16, 139, 1202, 10409, 90157, 780922, 6764246, 58591124, 507509767, 4395993154, 38077604237, 329823977717, 2856898655026, 24746138781034, 214348305112232, 1856661207278099, 16082193123986242, 139302170295461137]

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

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