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A026790 Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026780. +0
1
1, 1, 2, 4, 7, 12, 23, 41, 72, 135, 243, 432, 804, 1455, 2608, 4836, 8785, 15838, 29306, 53385, 96654, 178600, 326019, 592140, 1093135, 1998537, 3638700, 6712659, 12287071, 22412784, 41325279, 75712253, 138308808, 254912873 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A082548 A007323 A099604 this_sequence A054165 A054171 A018080

Adjacent sequences: A026787 A026788 A026789 this_sequence A026791 A026792 A026793

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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