A236426 Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise

12373, 544380, 24143945, 987221751, 38520605664, 1385464957395, 46895371359150, 1481853762527918, 44250443243011112, 1248360171584853050, 33527011369578729307, 858472994569245436699, 21068648545060095499439

Offset

1,1

Comments

Column 4 of A236427

Links

R. H. Hardin, Table of n, a(n) for n = 1..29

Example

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

Crossrefs

Sequence in context: A096618 A238308 A179916 * A235841 A140938 A202563

Adjacent sequences: A236423 A236424 A236425 * A236427 A236428 A236429

Keyword

nonn

Author

R. H. Hardin, Jan 25 2014

Status

approved