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A232139
Number of (2+1)X(n+1) 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order
1
44, 728, 10956, 169692, 2616952, 40399768, 623543776, 9624373808, 148550587192, 2292857494812, 35389922134468, 546238342870352, 8431109896279836, 130132963416612180, 2008583492065392256, 31002196055330559468
OFFSET
1,1
COMMENTS
Row 2 of A232137
LINKS
FORMULA
Empirical: a(n) = 15*a(n-1) +16*a(n-2) -163*a(n-3) +305*a(n-4) +116*a(n-5) -2324*a(n-6) +1718*a(n-7) -5922*a(n-8) +14296*a(n-9) +18892*a(n-10) -15292*a(n-11) -21000*a(n-12) -12320*a(n-13) -17184*a(n-14) +11072*a(n-15) +5120*a(n-17)
EXAMPLE
Some solutions for n=3
..0..1..0..1....0..1..1..2....0..1..2..2....0..1..2..2....0..1..0..2
..1..2..1..2....0..0..2..2....2..1..0..2....0..1..0..2....1..0..0..2
..1..0..1..2....2..0..0..1....2..2..0..1....1..2..0..1....2..1..2..0
CROSSREFS
Sequence in context: A358794 A120812 A282860 * A296576 A202164 A231128
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 19 2013
STATUS
approved