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 A198661 T(n,k)=Number of nXk 0..7 arrays with values 0..7 introduced in row major order and each element equal to at least one horizontal or vertical neighbor 7
 0, 1, 1, 1, 3, 1, 2, 14, 14, 2, 3, 76, 185, 76, 3, 6, 488, 3904, 3904, 488, 6, 11, 3521, 98467, 344044, 98467, 3521, 11, 23, 28030, 3053286, 40065880, 40065880, 3053286, 28030, 23, 47, 242883, 109133049, 6046334324, 22693251873, 6046334324, 109133049 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Table starts ...0.......1..........1.............2..............3..............6 ...1.......3.........14............76............488...........3521 ...1......14........185..........3904..........98467........3053286 ...2......76.......3904........344044.......40065880.....6046334324 ...3.....488......98467......40065880....22693251873.17510670291958 ...6....3521....3053286....6046334324.17510670291958 ..11...28030..109133049.1099981072751 ..23..242883.4460603630 ..47.2267306 .103 LINKS R. H. Hardin, Table of n, a(n) for n = 1..59 EXAMPLE Some solutions with all values 0 to 7 for n=6 k=3 ..0..1..2....0..1..1....0..1..1....0..1..1....0..1..1....0..1..1....0..1..2 ..0..1..2....0..2..2....0..2..2....0..2..3....0..0..0....0..2..3....0..1..2 ..3..0..4....3..3..3....3..3..4....4..2..3....2..3..3....0..2..3....3..4..5 ..3..0..4....3..4..4....5..2..4....4..4..5....2..4..4....4..5..5....3..4..5 ..5..5..6....5..6..7....5..2..6....6..6..5....5..6..7....4..5..6....0..0..6 ..7..7..6....5..6..7....7..7..6....7..7..5....5..6..7....7..7..6....7..7..6 CROSSREFS Sequence in context: A198708 A198627 A198654 * A163485 A276011 A126038 Adjacent sequences: A198658 A198659 A198660 * A198662 A198663 A198664 KEYWORD nonn,tabl AUTHOR R. H. Hardin Oct 28 2011 STATUS approved

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Last modified March 24 12:09 EDT 2023. Contains 361479 sequences. (Running on oeis4.)