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A026526 a(n) = T(2n,n-1), T given by A026519. 0
1, 2, 9, 32, 130, 516, 2107, 8632, 35703, 148390, 619850, 2598960, 10933507, 46124274, 195055005, 826617216, 3509650697, 14926011714, 63572290247 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Also a(n) = T(2n, n-1), T given by A026536.

Sequence in context: A006253 A045630 A075364 * A086607 A150913 A150914

Adjacent sequences:  A026523 A026524 A026525 * A026527 A026528 A026529

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 16 07:32 EST 2012. Contains 205874 sequences.