A251973 Number of (n+1)X(7+1) 0..3 arrays with nondecreasing sum of every two consecutive values in every row and column.

1500625, 294122500, 57648010000, 4067643585600, 287012931399936, 10332465530397696, 371968759094317056, 8266815890892066816, 183725765411866546176, 2835563471280083174400, 43763160717460467360000

Offset: 1

Author

R. H. Hardin, Dec 12 2014

Keywords

• nonn

Comments

Column 7 of A251974

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..18