The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A233375 Number of (1+1)X(n+1) 0..2 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..1+1} nondecreasing 1
 28, 98, 286, 729, 1678, 3555, 7048, 13215, 23641, 40618, 67389, 108421, 169774, 259497, 388144, 569338, 820471, 1163461, 1625690, 2240996, 3050879, 4105789, 5466649, 7206472, 9412271, 12187059, 15652184, 19949789, 25245633, 31732052 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 1 of A233374 LINKS R. H. Hardin, Table of n, a(n) for n = 1..186 EXAMPLE Some solutions for n=5 ..1..0..1..1..1..1....0..0..1..1..1..2....0..2..2..0..1..1....1..1..1..1..0..1 ..0..1..2..2..2..2....0..0..2..2..2..2....0..0..1..2..2..2....0..1..1..1..2..2 CROSSREFS Sequence in context: A211495 A233374 A231230 * A219691 A212777 A130281 Adjacent sequences: A233372 A233373 A233374 * A233376 A233377 A233378 KEYWORD nonn AUTHOR R. H. Hardin, Dec 08 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 20 18:09 EDT 2023. Contains 361391 sequences. (Running on oeis4.)