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A222932
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Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and antidiagonal neighbors in a random 0..3 nX4 array
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1
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16, 256, 4000, 63488, 1048352, 16777216, 268435456, 4294962688, 68702699520, 1099511601152, 17592186044416, 281474976710656, 4503599627247616, 72057490958712832, 1152921504604356608, 18446744073709551616
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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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FORMULA
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Empirical: a(n) = 16*a(n-1) +8352*a(n-5) -133632*a(n-6) -18096384*a(n-10) +289542144*a(n-11) +2753724416*a(n-15) -44059590656*a(n-16) -143077146624*a(n-20) +2289234345984*a(n-21) +2757369004032*a(n-25) -44117904064512*a(n-26) -17592186044416*a(n-30) +281474976710656*a(n-31)
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EXAMPLE
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Some solutions for n=3
..1..0..1..0....0..1..0..1....1..1..0..1....0..0..1..0....0..1..0..1
..0..1..0..0....1..0..0..1....0..0..1..1....0..1..0..0....0..1..1..1
..0..1..0..0....0..0..0..0....0..0..0..0....1..1..0..0....1..0..0..1
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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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