A263057 Number of (n+1)X(5+1) 0..1 arrays with each row and column not divisible by 3, read as a binary number with top and left being the most significant bits.

42, 4314, 188370, 10416690, 439260642, 19763462754, 830550961170, 35491321238130, 1490799705490242, 62885673930539394, 2641262874276464370, 111053568381384471570, 4664277162998698135842, 195952869163413914931234

Offset

1,1

Comments

Column 5 of A263060.

Links

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

Formula

Empirical: a(n) = 42*a(n-1) +711*a(n-2) -29862*a(n-3) -141183*a(n-4) +5929686*a(n-5) +10349613*a(n-6) -434683746*a(n-7) -267400116*a(n-8) +11230804872*a(n-9) +1666598976*a(n-10) -69997156992*a(n-11)

Example

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

Crossrefs

Cf. A263060.

Sequence in context: A309193 A295438 A294974 * A048538 A268546 A102967

Adjacent sequences: A263054 A263055 A263056 * A263058 A263059 A263060

Keyword

nonn

Author

R. H. Hardin, Oct 08 2015

Status

approved