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.
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
Offset: 1
Keywords
Examples
Some solutions for n=4 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..1..0....0..1..1 ..0..0..0....0..0..1....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0 ..0..0..0....0..0..0....0..0..0....0..0..1....0..0..0....0..0..0....0..0..0 ..0..1..0....0..0..0....1..1..1....0..0..0....0..1..1....0..0..0....0..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Comments