A236645 - OEIS

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

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

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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