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A236699 Number of (n+1)X(2+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median of every 2X2 subblock 1
426, 3188, 23788, 178232, 1338314, 10041714, 75235940, 563994510, 4230366698, 31726827262, 237865973686, 1783460957136, 13373943276560, 100288547813090, 751986752725048, 5638573976780912, 42280856157758116, 317044089247366498 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A236704

LINKS

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

FORMULA

Empirical: a(n) = 96*a(n-3) +1446*a(n-4) +5002*a(n-5) +17664*a(n-6) +35634*a(n-7) -116079*a(n-8) -592189*a(n-9) -1339728*a(n-10) -1887666*a(n-11) +2632054*a(n-12) +13237330*a(n-13) +11983924*a(n-14) -2210264*a(n-15) -30127027*a(n-16) -74045536*a(n-17) -31775396*a(n-18) +57370541*a(n-19) +107961054*a(n-20) +152751643*a(n-21) -5885835*a(n-22) -187702017*a(n-23) -88991375*a(n-24) +19869847*a(n-25) +14214180*a(n-26) +2960509*a(n-27) +3444037*a(n-28) +6873307*a(n-29) +3739807*a(n-30) +1674422*a(n-31) +1147568*a(n-32) -194342*a(n-33) -236326*a(n-34) +6568*a(n-35) +12768*a(n-36) for n>37

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A045094 A252411 A236605 * A338154 A173374 A227484

Adjacent sequences:  A236696 A236697 A236698 * A236700 A236701 A236702

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2014

STATUS

approved

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Last modified March 4 02:39 EST 2021. Contains 341774 sequences. (Running on oeis4.)