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 A203443 T(n,k)=Number of nXk 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 8
 1, 1, 1, 1, 8, 1, 1, 64, 64, 1, 1, 372, 4124, 372, 1, 1, 2528, 142108, 142108, 2528, 1, 1, 21988, 4401184, 24278164, 4401184, 21988, 1, 1, 186348, 168492336, 3216740482, 3216740482, 168492336, 186348, 1, 1, 1484834, 6975234574, 482229769194 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts .1.......1............1..............1................1................1 .1.......8...........64............372.............2528............21988 .1......64.........4124.........142108..........4401184........168492336 .1.....372.......142108.......24278164.......3216740482.....482229769194 .1....2528......4401184.....3216740482....1842430382222.1163067191357930 .1...21988....168492336...482229769194.1163067191357930 .1..186348...6975234574.79772073060022 .1.1484834.276131799334 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=5 k=3 ..4..5..5....5..5..3....4..4..4....7..7..2....6..6..0....2..4..4....3..3..0 ..4..7..7....5..5..3....7..7..6....7..7..5....6..7..7....2..4..4....3..4..4 ..4..7..7....4..2..1....7..7..7....0..7..5....7..7..7....7..7..7....1..7..7 ..2..6..6....4..4..1....4..7..7....3..7..7....7..3..7....7..6..7....0..7..7 ..0..6..6....4..4..0....3..3..0....3..7..7....7..7..7....7..7..7....0..1..1 CROSSREFS Sequence in context: A176227 A340560 A022171 * A176642 A172346 A178048 Adjacent sequences: A203440 A203441 A203442 * A203444 A203445 A203446 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 01 2012 STATUS approved

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Last modified December 7 01:49 EST 2023. Contains 367616 sequences. (Running on oeis4.)