A203658 Number of (n+1)X3 0..7 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing

27966, 4859580, 729677481, 85151157995, 8115230716866, 656137171037648, 46216860954254233, 2891295237770491561, 163019734007831844856, 8380298695440493585058, 396465950291520018891482

Offset

1,1

Comments

Column 2 of A203661

Links

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

Example

Some solutions for n=5
..2..5..1....1..7..6....1..7..6....5..7..5....0..6..4....2..1..1....7..7..7
..4..3..7....3..6..7....4..5..6....7..5..7....1..5..7....2..5..5....7..7..7
..1..6..4....2..7..6....6..4..3....5..7..7....6..2..5....2..5..5....7..7..7
..6..2..2....3..6..7....4..6..7....5..7..7....2..6..5....0..7..7....7..7..7
..7..2..2....2..7..7....3..7..6....6..7..0....7..2..0....1..7..7....7..7..7
..7..2..2....5..7..2....4..6..7....6..7..6....7..7..0....6..7..7....7..7..7

Crossrefs

Sequence in context: A233430 A220986 A242607 * A247992 A236093 A116462

Adjacent sequences: A203655 A203656 A203657 * A203659 A203660 A203661

Keyword

nonn

Author

R. H. Hardin Jan 04 2012

Status

approved