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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A233301

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..36

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

Adjacent sequences:  A233294 A233295 A233296 * A233298 A233299 A233300

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 07 2013

STATUS

approved

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Last modified July 30 23:12 EDT 2021. Contains 346365 sequences. (Running on oeis4.)