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.

A303678 Number of nX4 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.

Table of values

n a(n)
1 5
2 17
3 15
4 28
5 44
6 64
7 90
8 132
9 204
10 312
11 466
12 688
13 1024
14 1540
15 2318
16 3472
17 5184
18 7748
19 11606
20 17396
21 26052
22 38984
23 58338
24 87340
25 130788
26 195824
27 293146
28 438824
29 656952
30 983564
31 1472534
32 2204504
33 3300280
34 4940796
35 7396894
36 11073932
37 16578716

List of values

[5, 17, 15, 28, 44, 64, 90, 132, 204, 312, 466, 688, 1024, 1540, 2318, 3472, 5184, 7748, 11606, 17396, 26052, 38984, 58338, 87340, 130788, 195824, 293146, 438824, 656952, 983564, 1472534, 2204504, 3300280, 4940796, 7396894, 11073932, 16578716]

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

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