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A236611 Number of (n+1)X(1+1) 0..2 arrays colored with the maximum plus the upper median of every 2X2 subblock 1
81, 390, 1885, 8876, 41473, 193372, 912752, 4290712, 20084444, 93983432, 442021140, 2076094832, 9730606384, 45599799840, 214146503952, 1005291748992, 4714559632016, 22107730227904, 103762018758272, 486963243432832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A236618

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 16*a(n-3) +280*a(n-4) +376*a(n-5) +932*a(n-6) +1120*a(n-7) -1456*a(n-8) -1696*a(n-9) -768*a(n-10) -1152*a(n-11) for n>13

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A237108 A237101 A236618 * A236719 A236712 A206542

Adjacent sequences:  A236608 A236609 A236610 * A236612 A236613 A236614

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 2014

STATUS

approved

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Last modified June 16 14:56 EDT 2019. Contains 324152 sequences. (Running on oeis4.)