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A184003
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T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with all 2X2 subblock sums the same
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10
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81, 171, 171, 361, 309, 361, 855, 579, 579, 855, 2025, 1233, 977, 1233, 2025, 5175, 2691, 1887, 1887, 2691, 5175, 13225, 6417, 3793, 3309, 3793, 6417, 13225, 35535, 15555, 8415, 6111, 6111, 8415, 15555, 35535, 95481, 40041, 19217, 12525, 10449
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OFFSET
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1,1
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COMMENTS
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Table starts
.....81....171....361....855...2025...5175..13225...35535...95481..265431
....171....309....579...1233...2691...6417..15555...40041..104211..282609
....361....579....977...1887...3793...8415..19217...47031..117601..308799
....855...1233...1887...3309...6111..12525..26655...61125..144495..361293
...2025...2691...3793...6111..10449..19935..39697...85431..190305..450111
...5175...6417...8415..12525..19935..35565..66591..134853..282735..628557
..13225..15555..19217..26655..39697..66591.118097..227319..453025..954495
..35535..40041..47031..61125..85431.134853.227319..418461..799815.1612581
..95481.104211.117601.144495.190305.282735.453025..799815.1476081.2878671
.265431.282609.308799.361293.450111.628557.954495.1612581.2878671.5460909
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..199
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FORMULA
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Empirical, for every row and column: a(n)=6*a(n-1)-60*a(n-3)+85*a(n-4)+150*a(n-5)-360*a(n-6)+396*a(n-8)-216*a(n-9)
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EXAMPLE
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Some solutions for 3X3
..2..2..2....1..0..1....1..0..2....2..1..2....0..2..1....0..2..0....1..0..0
..2..0..2....2..1..2....1..1..0....1..2..1....2..0..1....2..1..2....0..1..1
..2..2..2....0..1..0....0..1..1....1..2..1....0..2..1....2..0..2....1..0..0
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CROSSREFS
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Sequence in context: A267696 A232923 A250655 * A183995 A044413 A044794
Adjacent sequences: A184000 A184001 A184002 * A184004 A184005 A184006
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KEYWORD
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nonn,tabl
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AUTHOR
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R. H. Hardin Jan 08 2011
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STATUS
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approved
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