A183828 Number of (n+1)X(n+1) 0..2 arrays with each element of every 2X2 subblock being the sum mod 3 of two others

31, 823, 53589, 9622587, 4200572147, 4948592709925, 14358430351511371, 110479563010698341555, 2118299776083958827463621

Offset

1,1

Comments

Diagonal of A183836

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for 3X3
..2..2..1....2..1..2....0..2..1....2..0..2....1..1..2....2..2..2....1..0..2
..0..1..0....1..0..1....2..1..2....1..1..1....2..2..1....0..1..1....2..2..1
..1..2..2....1..2..2....0..2..0....0..2..0....1..0..2....2..2..2....0..1..2

Crossrefs

Sequence in context: A051587 A069380 A006111 * A180847 A202977 A213467

Adjacent sequences: A183825 A183826 A183827 * A183829 A183830 A183831

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved