A202740 Number of nX6 0..1 arrays with row sums equal and column sums unequal to adjacent columns

2, 102, 3032, 62398, 1375912, 27842760, 578826040, 11600238174, 239443637912, 4806953288872, 98795215188760, 1991699775933928, 40848655904440568, 824853028164662088, 16889107635602264212, 341245428784872621534

Offset

1,1

Comments

Column 6 of A202742

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

Some solutions for n=4
..0..1..0..0..1..1....1..0..1..0..1..1....1..0..0..0..1..1....0..1..1..0..0..0
..0..1..0..1..0..1....1..0..1..1..1..0....0..1..1..0..1..0....1..1..0..0..0..0
..1..0..0..1..1..0....1..0..1..1..1..0....0..0..1..1..1..0....0..1..1..0..0..0
..1..1..0..0..1..0....1..0..1..1..1..0....1..0..1..0..1..0....1..0..0..0..1..0

Crossrefs

Sequence in context: A111012 A256516 A157066 * A283624 A055693 A357767

Adjacent sequences: A202737 A202738 A202739 * A202741 A202742 A202743

Keyword

nonn

Author

R. H. Hardin Dec 23 2011

Status

approved