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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A233376 Number of (2+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..2+1} nondecreasing. 1
117, 1046, 7595, 46935, 254725, 1242042, 5538026, 22884715, 88577443, 323908967, 1126962281, 3752622108, 12018652575, 37179997956, 111500267903, 325181295220, 924812060067, 2571036007642, 7001871008078, 18714994291394, 49177003589853 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 2 of A233374.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..67

EXAMPLE

Some solutions for n=4

..0..0..0..1..1....0..0..0..2..2....0..0..1..2..2....0..0..1..1..0

..1..2..0..0..2....1..2..0..2..2....1..2..1..0..1....0..0..0..1..1

..0..0..2..2..2....1..1..2..1..2....0..0..1..2..2....0..0..0..0..2

CROSSREFS

Sequence in context: A273125 A327599 A326064 * A233051 A278774 A219990

Adjacent sequences: A233373 A233374 A233375 * A233377 A233378 A233379

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 29 20:26 EST 2023. Contains 359926 sequences. (Running on oeis4.)