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.

A301837 Number of nX4 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 8
2 81
3 678
4 5748
5 48802
6 414385
7 3518619
8 29877293
9 253694309
10 2154171994
11 18291531681
12 155317282580
13 1318832060857
14 11198483378779
15 95088702916552
16 807418390272882
17 6855961191710593
18 58215423910060190
19 494319539779559696

List of values

[8, 81, 678, 5748, 48802, 414385, 3518619, 29877293, 253694309, 2154171994, 18291531681, 155317282580, 1318832060857, 11198483378779, 95088702916552, 807418390272882, 6855961191710593, 58215423910060190, 494319539779559696]

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

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