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A210314 Number of (n+1)X3 0..3 arrays containing all values 0..3 with every 2X2 subblock having two or three distinct values, and new values 0..3 introduced in row major order 1
35, 4125, 279526, 16048775, 863174816, 45102170733, 2324938770750, 119066365167743, 6078269658276164, 309804771379081797, 15778253418814486642, 803272327276093831503, 40886881399081354971416 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A210320
LINKS
FORMULA
Empirical: a(n) = 79*a(n-1) -1474*a(n-2) +1450*a(n-3) +39515*a(n-4) -30297*a(n-5) -122076*a(n-6) +99228*a(n-7) +43912*a(n-8) -53472*a(n-9) +11232*a(n-10)
EXAMPLE
Some solutions for n=4
..0..0..0....0..1..0....0..1..0....0..0..0....0..1..0....0..0..0....0..0..1
..1..1..1....0..1..0....0..0..1....0..1..1....0..1..0....0..1..0....2..3..0
..0..0..2....2..0..2....1..1..0....1..0..1....0..1..0....1..0..1....1..2..0
..3..3..0....1..1..0....2..3..0....1..2..2....0..1..1....2..1..1....0..1..0
..0..2..2....3..3..0....1..1..1....1..0..3....0..2..3....0..0..3....0..2..0
CROSSREFS
Sequence in context: A202578 A213404 A249887 * A294851 A266053 A115963
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2012
STATUS
approved

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Last modified May 29 14:43 EDT 2024. Contains 372952 sequences. (Running on oeis4.)