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.

A208114 Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 9
2 81
3 225
4 625
5 1225
6 2401
7 3969
8 6561
9 9801
10 14641
11 20449
12 28561
13 38025
14 50625
15 65025
16 83521
17 104329
18 130321
19 159201
20 194481
21 233289
22 279841
23 330625
24 390625
25 455625
26 531441
27 613089
28 707281
29 808201
30 923521
31 1046529
32 1185921
33 1334025

List of values

[9, 81, 225, 625, 1225, 2401, 3969, 6561, 9801, 14641, 20449, 28561, 38025, 50625, 65025, 83521, 104329, 130321, 159201, 194481, 233289, 279841, 330625, 390625, 455625, 531441, 613089, 707281, 808201, 923521, 1046529, 1185921, 1334025]

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

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