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A159230
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1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 31
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0
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2, 5, 10, 20, 38, 74, 142, 278, 542, 1070, 2110, 4190, 8318, 16574, 33022, 65918, 131582, 262910, 525310, 1050110, 2099198, 4197374, 8392702, 16783358, 33562622, 67121150, 134234110
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OFFSET
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2,1
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COMMENTS
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Same series for 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 9
Same series for 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 13
Same series for 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 19
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LINKS
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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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