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A235845
Number of (n+1)X(3+1) 0..3 arrays with the upper median unequal to the lower median in every 2X2 subblock
1
16228, 1133608, 80556656, 5778908484, 415698469568, 29937676955084, 2156857770093828, 155414194184061336, 11199079002464581764, 807017035004418681844, 58154884407935003132880, 4190741598855907942838336
OFFSET
1,1
COMMENTS
Column 3 of A235849
FORMULA
Empirical recurrence of order 55 (see link above)
EXAMPLE
Some solutions for n=1
..1..2..0..1....3..2..2..3....0..0..0..1....3..0..2..0....3..3..3..2
..1..2..0..1....0..0..1..3....3..2..2..0....1..0..2..1....1..1..0..1
CROSSREFS
Sequence in context: A031624 A035921 A278607 * A254163 A254170 A254452
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 16 2014
STATUS
approved