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A206235 Number of (n+1)X6 0..3 arrays with every 2X3 or 3X2 subblock having exactly two equal edges, and new values 0..3 introduced in row major order 1
8910, 31652, 133392, 1236432, 10915392, 118573968, 1122086640, 10022726928, 109206613488, 1033441784400, 9230931489648, 100579291011408, 951799883421360, 8501687901954768, 92633527021495728, 876607692631061520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A206238

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +921*a(n-3) -921*a(n-4) for n>9

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A037192 A236890 A326259 * A329799 A329468 A185321

Adjacent sequences:  A206232 A206233 A206234 * A206236 A206237 A206238

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 05 2012

STATUS

approved

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Last modified January 28 13:34 EST 2022. Contains 350656 sequences. (Running on oeis4.)