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A235756 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise 4
81, 498, 498, 2996, 6578, 2996, 15782, 88732, 88732, 15782, 80584, 996868, 2721271, 996868, 80584, 388008, 10878790, 68186440, 68186440, 10878790, 388008, 1819537, 107853469, 1669079300, 3951955004, 1669079300, 107853469, 1819537, 8271237 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........81.........498...........2996...........15782............80584

.......498........6578..........88732..........996868.........10878790

......2996.......88732........2721271........68186440.......1669079300

.....15782......996868.......68186440......3951955004.....229794497298

.....80584....10878790.....1669079300....229794497298...32851676943413

....388008...107853469....36221011849..11883494266538.4249799416665556

...1819537..1029949275...753688651636.593235221174732

...8271237..9302743070.14525190680041

..36871545.81316688449

.161304512

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Column 1 is A235527

Sequence in context: A205206 A205063 A205057 * A235531 A235527 A297122

Adjacent sequences:  A235753 A235754 A235755 * A235757 A235758 A235759

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

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Last modified December 7 12:17 EST 2021. Contains 349581 sequences. (Running on oeis4.)