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.

A284330 Number of n X 4 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

Table of values

n a(n)
1 6
2 34
3 373
4 5130
5 70039
6 1000935
7 14581112
8 215806808
9 3229703988
10 48741017873
11 740325265021
12 11303036259207
13 173296776954307
14 2666236456702222
15 41141752932262310
16 636440516858225998
17 9866818127969621217

List of values

[6, 34, 373, 5130, 70039, 1000935, 14581112, 215806808, 3229703988, 48741017873, 740325265021, 11303036259207, 173296776954307, 2666236456702222, 41141752932262310, 636440516858225998, 9866818127969621217]

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

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