login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A232871 Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing 2
7, 14, 25, 39, 57, 81, 112, 151, 195, 247, 309, 382, 467, 558, 661, 778, 910, 1054, 1211, 1384, 1574, 1783, 2006, 2246, 2506, 2787, 3090, 3408, 3748, 4112, 4501, 4915, 5349, 5807, 6293, 6808, 7352, 7918, 8513, 9139, 9798, 10489, 11204, 11951, 12733, 13551 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A232877

LINKS

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

EXAMPLE

Some solutions for n=5

..1..0....0..0....0..0....0..0....0..1....1..0....0..0....1..0....0..0....0..0

..1..0....0..1....0..0....0..0....0..1....0..1....0..0....1..0....1..0....0..0

..1..0....1..1....1..0....0..0....0..1....0..1....0..0....0..1....1..0....0..1

..0..1....1..1....1..0....0..1....0..1....0..1....0..1....0..1....0..1....0..1

..0..1....1..1....0..1....0..1....1..1....0..1....0..1....1..1....0..1....0..1

..1..1....1..1....1..1....0..1....1..1....0..1....1..1....1..1....1..1....0..1

CROSSREFS

Sequence in context: A025011 A169874 A030414 * A232854 A232790 A095894

Adjacent sequences:  A232868 A232869 A232870 * A232872 A232873 A232874

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 01 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 28 06:29 EST 2020. Contains 331317 sequences. (Running on oeis4.)