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.

A302064 Number of n X 3 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 4
2 25
3 148
4 884
5 5296
6 31760
7 190528
8 1143104
9 6858496
10 41150720
11 246903808
12 1481421824
13 8888528896
14 53331169280
15 319987007488
16 1919922028544
17 11519532138496
18 69117192765440
19 414703156461568
20 2488218938507264

List of values

[4, 25, 148, 884, 5296, 31760, 190528, 1143104, 6858496, 41150720, 246903808, 1481421824, 8888528896, 53331169280, 319987007488, 1919922028544, 11519532138496, 69117192765440, 414703156461568, 2488218938507264]

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

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