A222933 Sum of neighbor maps: number of nX5 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 nX5 array

24, 1024, 32760, 1047664, 33553920, 1073741824, 34359738368, 1099511627776, 35184372088448, 1125899904556032, 36028797018701824, 1152921504606846976, 36893488147419103232, 1180591620717411303424, 37778931862957161699328

Offset

1,1

Comments

Column 5 of A222935

Links

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

Formula

Empirical: a(n) = 32*a(n-1) +2720*a(n-6) -87040*a(n-7) -2580736*a(n-12) +82583552*a(n-13) +1038909440*a(n-18) -33245102080*a(n-19) -194784526336*a(n-24) +6233104842752*a(n-25) +17021492264960*a(n-30) -544687752478720*a(n-31) -692761044975616*a(n-36) +22168353439219712*a(n-37) +11962686510202880*a(n-42) -382805968326492160*a(n-43) -72057594037927936*a(n-48) +2305843009213693952*a(n-49) for n>50

Example

Some solutions for n=3
..1..0..1..1..1....1..0..0..1..0....0..0..0..1..1....1..0..1..0..1
..1..1..0..1..0....1..1..0..1..0....0..1..1..1..0....0..0..1..1..1
..0..1..1..1..1....0..1..0..1..0....0..1..0..0..1....1..1..1..1..0

Crossrefs

Sequence in context: A265872 A223147 A272551 * A222384 A129622 A309421

Adjacent sequences: A222930 A222931 A222932 * A222934 A222935 A222936

Keyword

nonn

Author

R. H. Hardin Mar 09 2013

Status

approved