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 A250868 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with nondecreasing sum of every three consecutive values in every row and column 9
 262144, 4096000, 4096000, 64000000, 128000000, 64000000, 1000000000, 4000000000, 4000000000, 1000000000, 8000000000, 125000000000, 250000000000, 125000000000, 8000000000, 64000000000, 1750000000000, 15625000000000 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .........262144...........4096000.............64000000..............1000000000 ........4096000.........128000000...........4000000000............125000000000 .......64000000........4000000000.........250000000000..........15625000000000 .....1000000000......125000000000.......15625000000000........1953125000000000 .....8000000000.....1750000000000......382812500000000.......83740234375000000 ....64000000000....24500000000000.....9378906250000000.....3590362548828125000 ...512000000000...343000000000000...229783203125000000...153936794281005859375 ..2744000000000..2941225000000000..3152625546875000000..3379220508056640625000 .14706125000000.25221004375000000.43254022503125000000.74180648592859375000000 LINKS R. H. Hardin, Table of n, a(n) for n = 1..241 EXAMPLE Some solutions for n=1 k=4 ..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0 ..0..0..0..0..1..0....0..0..0..0..2..3....2..0..2..2..1..3....0..0..0..2..2..2 ..2..0..0..2..0..1....1..0..1..2..0..1....1..0..1..2..1..3....0..0..0..2..3..3 CROSSREFS Sequence in context: A224806 A224803 A223336 * A250861 A186629 A186626 Adjacent sequences:  A250865 A250866 A250867 * A250869 A250870 A250871 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Nov 28 2014 STATUS approved

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Last modified January 19 21:38 EST 2022. Contains 350466 sequences. (Running on oeis4.)