A203782 Number of (n+1)X4 0..3 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

3352, 187118, 13948153, 855879499, 42858325343, 1799006388496, 65121080193243, 2076963297883071, 59331537408924495, 1537581479584700034, 36518764447234430367, 801560882444435648518, 16372310993025152525853

Offset

1,1

Comments

Column 3 of A203787

Links

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

Example

Some solutions for n=4
..0..3..3..1....3..2..2..2....0..1..0..0....3..3..3..3....3..0..0..2
..3..1..1..3....2..3..3..3....1..1..3..3....3..3..3..3....0..3..3..2
..3..1..3..2....2..3..3..3....0..3..1..1....3..3..3..3....0..3..3..2
..1..3..2..2....2..3..3..3....3..2..1..1....3..3..3..3....3..1..1..3
..3..2..1..0....2..3..3..3....2..3..2..3....3..3..3..3....2..2..2..2

Crossrefs

Sequence in context: A151601 A251817 A216488 * A206978 A206972 A206575

Adjacent sequences: A203779 A203780 A203781 * A203783 A203784 A203785

Keyword

nonn

Author

R. H. Hardin Jan 05 2012

Status

approved