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.

A284766 Number of n X 3 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Table of values

n a(n)
1 1
2 14
3 119
4 720
5 5637
6 38792
7 298003
8 2180148
9 16717575
10 125826436
11 966619242
12 7382318636
13 56924033734
14 438478307376
15 3394276530311
16 26291371821860
17 204232995801978
18 1588199807894658
19 12373790849896599
20 96512252060362420

List of values

[1, 14, 119, 720, 5637, 38792, 298003, 2180148, 16717575, 125826436, 966619242, 7382318636, 56924033734, 438478307376, 3394276530311, 26291371821860, 204232995801978, 1588199807894658, 12373790849896599, 96512252060362420]

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

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