A236656 Number of (n+1) X (3+1) 0..3 arrays colored with the sum of the upper and lower median values of each 2 X 2 subblock.

32424, 1680044, 81224020, 4119658692, 211585138552, 10762574556276, 546654417361888, 27813242905834228, 1415383625007601404, 72003077632423500484, 3662933297414669708116, 186350091871565526225328

Offset

1,1

Comments

Column 3 of A236657.

Links

R. H. Hardin, Table of n, a(n) for n = 1..91

Example

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

Crossrefs

Cf. A236657.

Sequence in context: A236994 A156421 A156423 * A031639 A233680 A243857

Adjacent sequences: A236653 A236654 A236655 * A236657 A236658 A236659

Keyword

nonn

Author

R. H. Hardin, Jan 29 2014

Status

approved