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Search: id:A026661
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A026661 T(2n,n-1), T given by A026659. +0
1
1, 5, 20, 87, 358, 1533, 6445, 27555, 117529, 503001, 2167209, 9289047, 40320051, 173069913, 755481768, 3247042719, 14236984102, 61259521341, 269560841080, 1161017915091, 5123885956516, 22087793150253, 97719510829418 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A152187 A045499 A145932 this_sequence A099014 A011966 A017966

Adjacent sequences: A026658 A026659 A026660 this_sequence A026662 A026663 A026664

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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