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.

A301997 Number of nX6 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 5
2 50
3 309
4 2036
5 14016
6 100176
7 729297
8 5333386
9 39000114
10 285003038
11 2082142574
12 15211180773
13 111130989409
14 811933398770
15 5932115487834
16 43341007947078
17 316656251375882
18 2313539966133653
19 16903085362643740
20 123496604929203700

List of values

[5, 50, 309, 2036, 14016, 100176, 729297, 5333386, 39000114, 285003038, 2082142574, 15211180773, 111130989409, 811933398770, 5932115487834, 43341007947078, 316656251375882, 2313539966133653, 16903085362643740, 123496604929203700]

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

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