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Search: id:A049798
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A049798 a(n)=(1/2)*Sum{T(n,k): k=2,3,...,n}, array T as in A049800. +0
1
0, 0, 0, 1, 0, 2, 2, 2, 3, 7, 2, 7, 10, 8, 8, 15, 11, 19, 16, 15, 22, 32, 19, 25, 34, 34, 33, 46, 33, 47, 47, 48, 61, 65, 45, 62, 77, 79, 68, 87, 74, 94, 97, 86, 105, 127, 98, 114, 120, 124, 129, 154, 141, 151, 142, 147, 172, 200, 151, 180 (list; graph; listen)
OFFSET

1,6

CROSSREFS

Sequence in context: A143596 A091712 A125721 this_sequence A165198 A024682 A091228

Adjacent sequences: A049795 A049796 A049797 this_sequence A049799 A049800 A049801

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.


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