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A222932 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 1
16, 256, 4000, 63488, 1048352, 16777216, 268435456, 4294962688, 68702699520, 1099511601152, 17592186044416, 281474976710656, 4503599627247616, 72057490958712832, 1152921504604356608, 18446744073709551616 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A222935

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

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)

EXAMPLE

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

CROSSREFS

Sequence in context: A221665 A227592 A206840 * A220107 A171290 A136577

Adjacent sequences:  A222929 A222930 A222931 * A222933 A222934 A222935

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 09 2013

STATUS

approved

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Last modified May 24 05:06 EDT 2022. Contains 354005 sequences. (Running on oeis4.)