login
A232649
Number of (n+2)X(3+2) 0..1 arrays x(i,j) with every row sum{j*x(i,j), j=1..3+2} equal, and every column sum{i*x(i,j), i=1..n+2} equal, with upper left element zero
1
1, 1, 7, 7, 1, 19, 55, 1, 259, 613, 1, 3571, 8881, 1, 55765, 142369, 1, 947947, 2468845, 1, 17099809, 45375499, 1, 323927185, 871038571, 1, 6369199909, 17312303761, 1, 129094833121, 354018140455, 1, 2682854657047, 7411871621617, 1
OFFSET
1,3
COMMENTS
Column 3 of A232654
LINKS
EXAMPLE
Some solutions for n=6
..0..0..0..0..1....0..1..1..0..0....0..0..0..0..0....0..0..0..0..1
..0..1..1..0..0....1..0..0..1..0....0..0..0..0..0....1..0..0..1..0
..0..0..0..0..1....1..0..0..1..0....0..0..0..0..0....1..0..0..1..0
..0..1..1..0..0....0..0..0..0..1....0..0..0..0..0....0..1..1..0..0
..1..0..0..1..0....0..1..1..0..0....0..0..0..0..0....0..0..0..0..1
..0..1..1..0..0....0..1..1..0..0....0..0..0..0..0....0..0..0..0..1
..1..0..0..1..0....1..0..0..1..0....0..0..0..0..0....1..0..0..1..0
..0..0..0..0..1....0..0..0..0..1....0..0..0..0..0....0..1..1..0..0
CROSSREFS
Sequence in context: A011452 A199952 A093781 * A232650 A365672 A108390
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2013
STATUS
approved