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.

A184032 1/16 the number of (n+1) X 3 0..3 arrays with all 2 X 2 subblocks having the same four values.

Table of values

n a(n)
1 28
2 40
3 61
4 103
5 181
6 337
7 637
8 1237
9 2413
10 4765
11 9421
12 18733
13 37261
14 74317
15 148237
16 296077
17 591373
18 1181965
19 2362381
20 4723213
21 9443341
22 18883597
23 37761037
24 75515917
25 151019533
26 302026765
27 604028941
28 1208033293
29 2416017421
30 4831985677

List of values

[28, 40, 61, 103, 181, 337, 637, 1237, 2413, 4765, 9421, 18733, 37261, 74317, 148237, 296077, 591373, 1181965, 2362381, 4723213, 9443341, 18883597, 37761037, 75515917, 151019533, 302026765, 604028941, 1208033293, 2416017421, 4831985677]

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

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