A262418 Number of (n+1)X(6+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits.

0, 2892, 124572, 7577424, 326005344, 15231780324, 655089996204, 28755516792360, 1236553617638640, 53446495303862172, 2298231625018170492, 98951519822732397504, 4254930564828132559104, 183021121626516730866324

Offset

1,2

Comments

Column 6 of A262420.

Links

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

Formula

Empirical: a(n) = 43*a(n-1) +777*a(n-2) -33411*a(n-3) -179235*a(n-4) +7707105*a(n-5) +17148167*a(n-6) -737371181*a(n-7) -706190268*a(n-8) +30366181524*a(n-9) +11010302352*a(n-10) -473443001136*a(n-11) -33794555200*a(n-12) +1453165873600*a(n-13)

Example

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

Crossrefs

Cf. A262420.

Sequence in context: A253402 A061663 A205051 * A235816 A235819 A235575

Adjacent sequences: A262415 A262416 A262417 * A262419 A262420 A262421

Keyword

nonn

Author

R. H. Hardin, Sep 22 2015

Status

approved