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A183851
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Number of (n+1)X7 0..3 arrays with each element of every 2X2 subblock being the sum mod 4 of two others
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1
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9650, 136894, 1846987, 31362526, 515409762, 9808052813, 181527680767, 3637653147102, 71400670236377, 1460353019415072, 29473951514959991, 607704516654872749, 12431600718178381761, 257173291746012588265
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 3X7
..2..2..2..0..0..0..2....1..3..2..3..3..3..3....2..3..1..1..1..3..2
..0..0..0..2..2..2..0....2..1..1..1..2..1..2....1..1..2..3..2..1..1
..2..2..2..0..0..0..2....3..3..2..3..1..3..1....2..3..3..1..1..3..2
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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