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.

A183318 Number of nX6 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it.

Table of values

n a(n)
1 21
2 119
3 1109
4 7833
5 61755
6 455509
7 3437801
8 25528515
9 190243099
10 1412491505
11 10484413673
12 77772795145
13 576515430247
14 4273815283079
15 31666450138863
16 234664439146089
17 1738444321229885
18 12880327740810545
19 95414952005019587

List of values

[21, 119, 1109, 7833, 61755, 455509, 3437801, 25528515, 190243099, 1412491505, 10484413673, 77772795145, 576515430247, 4273815283079, 31666450138863, 234664439146089, 1738444321229885, 12880327740810545, 95414952005019587]

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

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