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A236645 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock 5
81, 518, 518, 3313, 5572, 3313, 21276, 59602, 59602, 21276, 136697, 642482, 1059502, 642482, 136697, 877196, 6911962, 19049512, 19049512, 6911962, 877196, 5629192, 74396558, 341611331, 573664384, 341611331, 74396558, 5629192, 36133600 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........81.........518..........3313..........21276.........136697

........518........5572.........59602.........642482........6911962

.......3313.......59602.......1059502.......19049512......341611331

......21276......642482......19049512......573664384....17220590706

.....136697.....6911962.....341611331....17220590706...865781100627

.....877196....74396558....6135691048...518482030480.43712112471052

....5629192...800122550..110014457016.15568191703124

...36133600..8610775166.1974419685940

..231937284.92635234654

.1488661856

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 23]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A076090 A183428 A236663 * A253314 A253662 A253731

Adjacent sequences:  A236642 A236643 A236644 * A236646 A236647 A236648

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 29 2014

STATUS

approved

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Last modified August 16 11:28 EDT 2022. Contains 356168 sequences. (Running on oeis4.)