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 A221590 T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their king-move neighbors in a random 0..3 nXk array 4
 1, 2, 2, 4, 8, 4, 8, 40, 40, 8, 16, 180, 418, 180, 16, 32, 772, 3760, 3760, 772, 32, 64, 3264, 31416, 64324, 31416, 3264, 64, 128, 13634, 256736, 1043774, 1043774, 256736, 13634, 128, 256, 56456, 2075520, 16758008, 33535224, 16758008, 2075520, 56456, 256, 512 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...1......2........4.........8.........16.........32........64........128 ...2......8.......40.......180........772.......3264.....13634......56456 ...4.....40......418......3760......31416.....256736...2075520...16690688 ...8....180.....3760.....64324....1043774...16758008.268358624.4294659968 ..16....772....31416...1043774...33535224.1073664992 ..32...3264...256736..16758008.1073664992 ..64..13634..2075520.268358624 .128..56456.16690688 .256.232150 .512 LINKS R. H. Hardin, Table of n, a(n) for n = 1..59 EXAMPLE Some solutions for n=3 k=4 ..1..0..0..0....1..0..1..1....0..1..0..0....0..1..1..0....1..1..1..0 ..1..1..1..0....1..0..0..0....1..0..1..0....0..0..1..1....1..0..0..0 ..1..0..1..1....1..1..1..0....1..0..1..0....1..0..0..1....1..0..0..1 CROSSREFS Column 1 is A000079(n-1) Sequence in context: A220545 A220751 A220967 * A137778 A000017 A032522 Adjacent sequences:  A221587 A221588 A221589 * A221591 A221592 A221593 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 20 2013 STATUS approved

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Last modified September 16 03:22 EDT 2019. Contains 327088 sequences. (Running on oeis4.)