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.

A222323 Number of nX3 0..1 arrays with exactly floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 0
2 0
3 4
4 19
5 0
6 84
7 212
8 1366
9 1302
10 11152
11 21206
12 132937
13 213292
14 1337380
15 2647514
16 15028233
17 29622012
18 163019148
19 347100284
20 1830194472
21 3971385578
22 20474549872
23 45912542370
24 231923364114
25 527948983676
26 2633446191848
27 6087316332422

List of values

[0, 0, 4, 19, 0, 84, 212, 1366, 1302, 11152, 21206, 132937, 213292, 1337380, 2647514, 15028233, 29622012, 163019148, 347100284, 1830194472, 3971385578, 20474549872, 45912542370, 231923364114, 527948983676, 2633446191848, 6087316332422]

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

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