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.

A183683 Number of (n+1) X 5 binary arrays with every 2 X 2 subblock nonsingular.

Table of values

n a(n)
1 48
2 208
3 832
4 3472
5 14144
6 58448
7 239424
8 986128
9 4047680
10 16650448
11 68397888
12 281218704
13 1155579712
14 4750209360
15 19522035520
16 80241997072
17 329789811520
18 1355498530256
19 5571139502912
20 22898117877648
21 94112790021952

List of values

[48, 208, 832, 3472, 14144, 58448, 239424, 986128, 4047680, 16650448, 68397888, 281218704, 1155579712, 4750209360, 19522035520, 80241997072, 329789811520, 1355498530256, 5571139502912, 22898117877648, 94112790021952]

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

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