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A236592 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock 4
256, 2968, 2968, 34800, 80008, 34800, 407904, 2181116, 2181116, 407904, 4780656, 59464564, 139039736, 59464564, 4780656, 55986224, 1618144324, 8837067764, 8837067764, 1618144324, 55986224, 655930368, 44032289456, 560696734212 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........256..........2968..........34800..........407904.........4780656

.......2968.........80008........2181116........59464564......1618144324

......34800.......2181116......139039736......8837067764....560696734212

.....407904......59464564.....8837067764...1309409137556.193437989847244

....4780656....1618144324...560696734212.193437989847244

...55986224...44032289456.35575423589536

..655930368.1198678030904

.7685235904

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..39

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 22]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A236654 A236198 A236195 * A236589 A236142 A236139

Adjacent sequences:  A236589 A236590 A236591 * A236593 A236594 A236595

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 29 2014

STATUS

approved

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Last modified October 21 01:26 EDT 2021. Contains 348128 sequences. (Running on oeis4.)