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.

A202330 Number of (n+1) X 4 binary arrays with consecutive windows of two bits considered as a binary number nondecreasing in every row and column.

Table of values

n a(n)
1 36
2 82
3 162
4 289
5 478
6 746
7 1112
8 1597
9 2224
10 3018
11 4006
12 5217
13 6682
14 8434
15 10508
16 12941
17 15772
18 19042
19 22794
20 27073
21 31926
22 37402
23 43552
24 50429
25 58088
26 66586
27 75982
28 86337
29 97714
30 110178
31 123796
32 138637
33 154772
34 172274
35 191218
36 211681
37 233742

List of values

[36, 82, 162, 289, 478, 746, 1112, 1597, 2224, 3018, 4006, 5217, 6682, 8434, 10508, 12941, 15772, 19042, 22794, 27073, 31926, 37402, 43552, 50429, 58088, 66586, 75982, 86337, 97714, 110178, 123796, 138637, 154772, 172274, 191218, 211681, 233742]

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

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