A236497 Number of (n+1)X(3+1) 0..3 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock.

19856, 404844, 8124056, 142835932, 2727955642, 52554367064, 1025983223760, 19095015395876, 366962215793842, 6990844356616700, 134711005690894338, 2546420278253752464, 48854198593454329848, 929727095141846903596

Offset

1,1

Comments

Column 3 of A236500

Links

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

Example

Some solutions for n=1
..3..1..2..0....1..0..3..2....1..1..0..2....1..2..2..2....0..3..1..0
..2..2..2..0....1..0..3..3....3..2..0..3....2..2..2..1....1..2..2..2

Crossrefs

Sequence in context: A206508 A206058 A388273 * A194197 A250703 A256653

Adjacent sequences: A236494 A236495 A236496 * A236498 A236499 A236500

Keyword

nonn

Author

R. H. Hardin, Jan 27 2014

Status

approved