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A047090 Sum{T(i,n-i): i=0,1,...,n}, array T as in A047089. +0
1
1, 2, 3, 6, 12, 21, 42, 84, 155, 310, 620, 1176, 2352, 4704, 9071, 18142, 36284, 70717, 141434, 282868, 555268, 1110536, 2221072, 4381656, 8763312, 17526624, 34697879, 69395758, 138791516, 275467455, 550934910, 1101869820, 2191008499 (list; graph; listen)
OFFSET

0,2

CROSSREFS

Sequence in context: A096571 A081156 A082877 this_sequence A018178 A112575 A018079

Adjacent sequences: A047087 A047088 A047089 this_sequence A047091 A047092 A047093

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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