The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A235439 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A235439

Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise
(history; published version)

#4 by R. H. Hardin at Fri Jan 10 09:52:59 EST 2014

STATUS

editing

approved

#3 by R. H. Hardin at Fri Jan 10 09:52:55 EST 2014

LINKS

R. H. Hardin, <a href="/A235439/b235439.txt">Table of n, a(n) for n = 1..147</a>

#2 by R. H. Hardin at Fri Jan 10 09:52:40 EST 2014

NAME

allocated for R. H. Hardin

Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise

DATA

2500, 65497, 1762344, 37115629, 785712765, 13504013024, 235332193767, 3433774399772, 50886532849316, 647263611376214, 8360593933795473, 94543450237472909, 1085137138664791739, 11076999555060193403

OFFSET

1,1

COMMENTS

Column 3 of A235441

EXAMPLE

Some solutions for n=2

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

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

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

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jan 10 2014

STATUS

approved

editing

#1 by R. H. Hardin at Fri Jan 10 09:50:33 EST 2014

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved