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A233297
Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing
1
7, 15, 31, 64, 129, 258, 515, 1029, 2055, 4107, 8211, 16410, 32811, 65624, 131224, 262372, 524634, 1049237, 2098363, 4196161, 8391728, 16783688, 33567165, 67128918, 134250383, 268502449, 536999938, 1073948247, 2147837919, 4295732271
OFFSET
1,1
COMMENTS
Column 1 of A233301
LINKS
EXAMPLE
Some solutions for n=5
..0..0....1..0....1..0....0..0....0..1....0..0....0..1....1..0....1..0....0..0
..0..0....1..0....1..0....0..0....0..1....0..0....1..0....1..0....1..0....0..0
..0..1....0..1....1..0....0..1....0..1....0..0....1..0....1..0....0..1....0..0
..0..1....0..1....0..1....0..1....0..1....1..1....0..1....1..0....0..1....0..0
..1..0....1..0....0..1....0..1....0..1....1..1....1..1....0..1....1..1....0..0
..0..1....0..1....1..1....0..1....1..1....1..1....1..1....0..1....1..1....1..1
CROSSREFS
Sequence in context: A137196 A120094 A078485 * A159695 A014001 A291642
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 07 2013
STATUS
approved