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.

A303464 Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 4
2 29
3 170
4 1033
5 6369
6 39098
7 240109
8 1476141
9 9071642
10 55751425
11 342663945
12 2106046874
13 12944002597
14 79556015733
15 488963529146
16 3005245731481
17 18470721790257
18 113523996378746
19 697736565265309
20 4288400399533821

List of values

[4, 29, 170, 1033, 6369, 39098, 240109, 1476141, 9071642, 55751425, 342663945, 2106046874, 12944002597, 79556015733, 488963529146, 3005245731481, 18470721790257, 113523996378746, 697736565265309, 4288400399533821]

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

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