The On-Line Encyclopedia of Integer Sequences (OEIS)

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A235778

Number of (n+1) X (3+1) 0..3 arrays with the sum of each 2 X 2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.
(history; published version)

#6 by Wesley Ivan Hurt at Sun Sep 04 20:41:16 EDT 2022

STATUS

editing

approved

#5 by Wesley Ivan Hurt at Sun Sep 04 20:41:00 EDT 2022

NAME

Number of (n+1) X (3+1) 0..3 arrays with the sum of each 2X2 2 X 2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.

COMMENTS

Column 3 of A235779.

CROSSREFS

Cf. A235779.

STATUS

approved

editing

#4 by R. H. Hardin at Wed Jan 15 12:45:00 EST 2014

STATUS

editing

approved

#3 by R. H. Hardin at Wed Jan 15 12:44:57 EST 2014

LINKS

R. H. Hardin, <a href="/A235778/b235778.txt">Table of n, a(n) for n = 1..34</a>

#2 by R. H. Hardin at Wed Jan 15 12:44:41 EST 2014

NAME

allocated for R. H. Hardin

Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise

DATA

23024, 1581879, 101237218, 5639406769, 284827103857, 12969746978427, 542604984360890, 20967636062967018, 756914723702877353, 25670260853234070465, 824040021622030909676, 25151768078055048000358

OFFSET

1,1

COMMENTS

Column 3 of A235779

EXAMPLE

Some solutions for n=1

..3..0..1..3....3..2..2..2....2..2..0..2....3..3..2..2....2..3..0..0

..0..3..2..0....0..1..3..3....1..2..1..1....1..1..0..0....3..1..3..0

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

editing

#1 by R. H. Hardin at Wed Jan 15 12:42:44 EST 2014

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved