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A235966 Number of (n+1)X(2+1) 0..3 arrays colored with the upper median value of each 2X2 subblock 1
1964, 16744, 119770, 856720, 6207010, 44922684, 325144432, 2361022844, 17119474440, 124220037442, 901411171700, 6541404674180, 47455915679480, 344384422869056, 2499060418302142, 18133500864283732, 131575224210238262 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235972

LINKS

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

FORMULA

Empirical: a(n) = 160*a(n-3) +1405*a(n-4) +2240*a(n-5) +5011*a(n-6) -47892*a(n-7) -167088*a(n-8) -266910*a(n-9) -62360*a(n-10) +1453816*a(n-11) +3423362*a(n-12) +2700096*a(n-13) -2875681*a(n-14) -1353448*a(n-15) +2584789*a(n-16) -4251920*a(n-17) -8824295*a(n-18) +685061*a(n-19) +4397856*a(n-20) +158216*a(n-21) +4986700*a(n-22) +129756*a(n-23) +547072*a(n-24) +96320*a(n-25) -215488*a(n-26) -16688*a(n-27) -35392*a(n-28) -9216*a(n-29) for n>34

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A159213 A056094 A253528 * A252380 A251023 A193312

Adjacent sequences:  A235963 A235964 A235965 * A235967 A235968 A235969

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 17 2014

STATUS

approved

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Last modified June 14 21:08 EDT 2021. Contains 345039 sequences. (Running on oeis4.)