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.

A301954 Number of 5Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 0
2 34
3 342
4 7326
5 120815
6 2406169
7 45013365
8 854043977
9 16129710295
10 305221439281
11 5771629701788
12 109164158236088
13 2064580944616050
14 39047423296702605
15 738499892840155074
16 13967193695049173564

List of values

[0, 34, 342, 7326, 120815, 2406169, 45013365, 854043977, 16129710295, 305221439281, 5771629701788, 109164158236088, 2064580944616050, 39047423296702605, 738499892840155074, 13967193695049173564]

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

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