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 A222271 Number of nX3 0..3 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order 1
 0, 4, 4, 81, 364, 5996, 27980, 507909, 2380692, 44501178, 208717216, 3948025953, 18510211252, 352744650956, 1653908717680, 31689827693324, 148654828631998, 2860214905912758, 13427178703144724, 259196177077920492 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 3 of A222275 LINKS R. H. Hardin, Table of n, a(n) for n = 1..125 EXAMPLE All solutions for n=3 ..0..0..0....0..0..0....0..1..0....0..0..0 ..0..0..1....0..0..0....0..0..0....1..0..0 ..0..0..0....0..1..0....0..0..0....0..0..0 CROSSREFS Sequence in context: A327303 A337302 A351349 * A068376 A131592 A317868 Adjacent sequences: A222268 A222269 A222270 * A222272 A222273 A222274 KEYWORD nonn AUTHOR R. H. Hardin Feb 14 2013 STATUS approved

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Last modified December 4 06:57 EST 2023. Contains 367557 sequences. (Running on oeis4.)