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A210103 Number of (n+1)X5 0..2 arrays with every 2X2 subblock having one or three distinct values, and new values 0..2 introduced in row major order 1
614, 12725, 254314, 5115121, 102841182, 2068413037, 41604910322, 836912242697, 16835567508454, 338674538233541, 6813037960821306, 137056899213689121, 2757159785015774318, 55465567148672270109, 1115797113738320026498 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A210107
LINKS
FORMULA
Empirical: a(n) = 39*a(n-1) -424*a(n-2) -100*a(n-3) +25342*a(n-4) -98910*a(n-5) -353224*a(n-6) +2683456*a(n-7) -679949*a(n-8) -24899773*a(n-9) +39419608*a(n-10) +84219756*a(n-11) -230024712*a(n-12) -56603460*a(n-13) +492890768*a(n-14) -143861456*a(n-15) -452015392*a(n-16) +208017984*a(n-17) +175455296*a(n-18) -65216128*a(n-19) -32317440*a(n-20) +2433024*a(n-21) +925696*a(n-22)
EXAMPLE
Some solutions for n=4
..0..0..0..1..2....0..1..2..2..0....0..1..1..1..2....0..0..1..2..0
..2..1..2..0..1....0..2..0..1..2....1..2..0..2..0....1..2..2..0..1
..1..0..0..1..2....2..1..1..2..0....1..0..1..2..1....2..0..1..2..2
..2..2..1..2..0....0..2..0..1..2....1..2..2..0..2....2..1..2..0..1
..1..0..1..0..1....0..1..2..0..0....0..1..0..1..1....2..0..0..1..2
CROSSREFS
Sequence in context: A252615 A252616 A252607 * A191938 A195809 A252923
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 17 2012
STATUS
approved

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Last modified June 18 14:18 EDT 2024. Contains 373481 sequences. (Running on oeis4.)