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.

A184539 Number of (n+2)X(n+2) binary arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

Table of values

n a(n)
1 45
2 193
3 631
4 1837
5 5313
6 16345
7 54543
8 194245
9 719905
10 2725367
11 10430675
12 40158073
13 155173369
14 601154073
15 2333701711
16 9075257125
17 35345417073
18 137846719279
19 538258108483
20 2104099248441
21 8233431070825
22 32247604093423

List of values

[45, 193, 631, 1837, 5313, 16345, 54543, 194245, 719905, 2725367, 10430675, 40158073, 155173369, 601154073, 2333701711, 9075257125, 35345417073, 137846719279, 538258108483, 2104099248441, 8233431070825, 32247604093423]

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

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