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Search: id:A026335
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A026335 a(n) = T(2n,n-1), where T is the array in A026323. +0
1
1, 4, 21, 112, 615, 3432, 19382, 110432, 633555, 3654840, 21179389, 123195360, 718887585, 4206458700, 24671967210, 145008786304, 853852037038, 5035940194824, 29744992814381, 175921665090480, 1041700117634505, 6175002739467276 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A117381 A010908 A136786 this_sequence A027909 A127111 A015554

Adjacent sequences: A026332 A026333 A026334 this_sequence A026336 A026337 A026338

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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