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.

A202331 Number of (n+1) X 5 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 49
2 129
3 289
4 576
5 1052
6 1796
7 2906
8 4501
9 6723
10 9739
11 13743
12 18958
13 25638
14 34070
15 44576
16 57515
17 73285
18 92325
19 115117
20 142188
21 174112
22 211512
23 255062
24 305489
25 363575
26 430159
27 506139
28 592474
29 690186
30 800362
31 924156
32 1062791
33 1217561

List of values

[49, 129, 289, 576, 1052, 1796, 2906, 4501, 6723, 9739, 13743, 18958, 25638, 34070, 44576, 57515, 73285, 92325, 115117, 142188, 174112, 211512, 255062, 305489, 363575, 430159, 506139, 592474, 690186, 800362, 924156, 1062791, 1217561]

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

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