A181036 Number of n X n binary matrices with no initial bit string in any row or column divisible by 6

1, 2, 6, 108, 2262, 280212, 46080957, 36405166265, 47512264085495, 240784798489897626, 2425732417937080443932

Offset

1,2

Comments

Diagonal of A181039

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for 4X4
..1..1..1..1....1..1..1..1....1..1..1..1....1..1..1..1....1..1..1..1
..1..0..1..1....1..1..1..0....1..0..0..0....1..0..0..1....1..0..0..0
..1..1..1..1....1..1..1..0....1..0..0..0....1..1..1..1....1..0..1..1
..1..0..0..0....1..0..1..0....1..0..0..1....1..0..0..1....1..0..0..1

Crossrefs

Sequence in context: A284262 A287935 A357090 * A222854 A351780 A059088

Adjacent sequences: A181033 A181034 A181035 * A181037 A181038 A181039

Keyword

nonn

Author

R. H. Hardin Sep 30 2010

Status

approved