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A254728
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally and vertically
9
512, 2630, 2630, 11677, 14226, 11677, 48168, 76615, 76615, 48168, 185287, 364039, 520824, 364039, 185287, 689386, 1645201, 3438279, 3438279, 1645201, 689386, 2473062, 7620738, 21750375, 32264339, 21750375, 7620738, 2473062, 8658471
OFFSET
1,1
COMMENTS
Table starts
......512......2630.......11677.........48168.........185287...........689386
.....2630.....14226.......76615........364039........1645201..........7620738
....11677.....76615......520824.......3438279.......21750375........138938314
....48168....364039.....3438279......32264339......264545705.......2224885924
...185287...1645201....21750375.....264545705.....2863637632......32722394252
...689386...7620738...138938314....2224885924....32722394252.....506044306865
..2473062..35110289...888613045...18677147321...369393588378....7806258134979
..8658471.160937385..5611704536..153918583667..4105206149596..118358703000421
.29751063.741804750.35547726137.1268250685728.46009312739781.1814886626676510
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 38] for n>42
k=2: [order 75] for n>91
EXAMPLE
Some solutions for n=2 k=4
..0..0..0..0..0..1....0..1..0..0..0..0....0..1..1..0..0..0....0..1..0..0..0..0
..1..0..0..0..0..1....0..0..0..1..1..0....1..0..0..1..1..0....0..0..0..0..1..1
..0..0..1..1..1..0....0..1..0..0..1..1....0..1..0..1..0..0....1..1..1..1..0..0
..1..0..1..1..1..1....0..1..1..1..1..1....0..1..1..0..0..1....1..0..0..1..0..1
CROSSREFS
Sequence in context: A254242 A254235 A254775 * A254721 A257189 A254989
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 06 2015
STATUS
approved