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A236663 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 of every 2X2 subblock 6
81, 518, 518, 3300, 5538, 3300, 21372, 58236, 58236, 21372, 138364, 631692, 1008315, 631692, 138364, 891832, 6798520, 18154174, 18154174, 6798520, 891832, 5750552, 72887588, 322686298, 553867544, 322686298, 72887588, 5750552, 37123784 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........81.........518..........3300..........21372.........138364

........518........5538.........58236.........631692........6798520

.......3300.......58236.......1008315.......18154174......322686298

......21372......631692......18154174......553867544....16530497266

.....138364.....6798520.....322686298....16530497266...823226052124

.....891832....72887588....5708337224...490200821004.40687629591240

....5750552...782409904..101248959916.14607033795744

...37123784..8415647974.1800875699576

..239612080.90402273416

.1546031840

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

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

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

CROSSREFS

Sequence in context: A128912 A076090 A183428 * A236645 A253314 A253662

Adjacent sequences:  A236660 A236661 A236662 * A236664 A236665 A236666

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 29 2014

STATUS

approved

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Last modified September 30 09:36 EDT 2022. Contains 357104 sequences. (Running on oeis4.)