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A236500 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock 6
256, 2228, 2228, 19856, 30916, 19856, 171436, 404844, 404844, 171436, 1503360, 5217808, 8124056, 5217808, 1503360, 13078180, 67922876, 142835932, 142835932, 67922876, 13078180, 114229184, 889064156, 2727955642, 4018409892, 2727955642 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........256..........2228...........19856............171436............1503360

.......2228.........30916..........404844...........5217808...........67922876

......19856........404844.........8124056.........142835932.........2727955642

.....171436.......5217808.......142835932........4018409892.......117174223516

....1503360......67922876......2727955642......117174223516......5510102027356

...13078180.....889064156.....52554367064.....3489407550956....252358163507060

..114229184...11593920636...1025983223760...102973945562456..11946600523108020

..995583500..150933818096..19095015395876..3020121066420424.550717159908756560

.8688160944.1967718157060.366962215793842.88792796276355104

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 11] for n>12

k=2: [order 43] for n>46

EXAMPLE

Some solutions for n=2 k=4

..1..1..2..0..1....0..1..2..0..3....1..1..2..0..1....0..1..1..0..0

..0..1..2..1..3....0..1..1..2..0....3..1..1..1..0....0..2..2..1..1

..3..3..2..1..1....2..3..2..2..1....0..0..2..3..1....3..3..3..1..1

CROSSREFS

Sequence in context: A206056 A207799 A207792 * A236495 A236118 A236113

Adjacent sequences:  A236497 A236498 A236499 * A236501 A236502 A236503

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 27 2014

STATUS

approved

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Last modified October 28 04:43 EDT 2021. Contains 348313 sequences. (Running on oeis4.)