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 A206967 T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal 7
 4, 16, 16, 61, 256, 61, 232, 3721, 3721, 232, 883, 53824, 188699, 53824, 883, 3361, 779689, 9499613, 9499613, 779689, 3361, 12793, 11296321, 480085367, 1657999936, 480085367, 11296321, 12793, 48694, 163660849, 24271094606, 291206601222 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....4.........16.............61.................232.....................883 ....16........256...........3721...............53824..................779689 ....61.......3721.........188699.............9499613...............480085367 ...232......53824........9499613..........1657999936............291206601222 ...883.....779689......480085367........291206601222.........178334417556473 ..3361...11296321....24271094606......51177439652621......109307204667939468 .12793..163660849..1226952447969....8992951964423491....66983278347851911670 .48694.2371105636.62023985354889.1580210545765137782.41045386720652187134446 LINKS R. H. Hardin, Table of n, a(n) for n = 1..97 EXAMPLE Some solutions for n=4 k=3 ..1..0..0....2..0..1....0..0..3....0..1..1....1..1..0....2..1..2....1..0..2 ..0..0..3....0..2..0....0..1..1....3..2..2....3..2..3....3..0..1....3..2..1 ..1..2..2....1..2..2....2..1..2....1..2..2....3..0..0....3..0..0....1..0..3 ..1..1..3....3..0..0....2..1..2....1..3..2....2..1..3....1..3..0....3..0..1 CROSSREFS Column 1 is A206790 Column 2 is A206791 Sequence in context: A207582 A207057 A206797 * A209092 A207134 A206838 Adjacent sequences:  A206964 A206965 A206966 * A206968 A206969 A206970 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 14 2012 STATUS approved

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Last modified May 17 04:02 EDT 2022. Contains 353727 sequences. (Running on oeis4.)