A232652 Number of (n+2)X(6+2) 0..1 arrays x(i,j) with every row sum{j*x(i,j), j=1..6+2} equal, and every column sum{i*x(i,j), i=1..n+2} equal, with upper left element zero

8, 8, 19, 19, 557, 2004, 571, 1, 209288, 1044803, 1, 351375, 187289952

Offset

1,1

Comments

Column 6 of A232654

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for n=5
..0..1..0..1..1..0..1..0....0..1..1..0..0..1..1..0....0..0..0..0..1..1..1..0
..0..0..1..0..0..0..1..1....0..1..1..0..1..0..0..1....1..1..1..1..0..0..0..1
..1..0..1..0..0..1..0..1....1..0..0..1..1..0..0..1....0..0..0..0..1..1..1..0
..1..0..1..0..0..1..0..1....0..1..1..0..1..0..0..1....0..0..0..0..1..1..1..0
..0..0..1..0..0..0..1..1....1..0..0..1..1..0..0..1....1..1..1..1..0..0..0..1
..0..1..0..1..1..0..1..0....1..0..0..1..0..1..1..0....0..0..0..0..1..1..1..0
..1..1..0..1..1..1..0..0....0..1..1..0..0..1..1..0....1..1..1..1..0..0..0..1

Crossrefs

Sequence in context: A346532 A298166 A298956 * A299592 A339707 A061156

Adjacent sequences: A232649 A232650 A232651 * A232653 A232654 A232655

Keyword

nonn

Author

R. H. Hardin, Nov 27 2013

Status

approved