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A095707
Total number of distinct winning paths across an n X n Hex board.
0
1, 3, 11, 54, 365, 3848, 68914
OFFSET
1,2
COMMENTS
a(n) ~ (n!)^2 / 2^n.
EXAMPLE
a(3) = 11; 8 of length 3 (cf. A001792) plus 2 of length 4 (cf. A096367) plus 1 of length 5 [a1,a2,b2,c2,c3].
CROSSREFS
Sequence in context: A054700 A009280 A267832 * A259105 A242952 A266027
KEYWORD
nonn,more
AUTHOR
David Bevan, Jul 07 2004
STATUS
approved