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A026756 Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026747. +0
1
1, 3, 8, 18, 42, 90, 204, 432, 972, 2052, 4610, 9726, 21859, 46125, 103783, 219099, 493699, 1042899, 2353716, 4975350, 11247138, 23790714, 53867343, 114020601, 258571256, 547672566, 1243848888, 2636201532, 5995717860 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A117080 A066425 A026679 this_sequence A026384 A066143 A110045

Adjacent sequences: A026753 A026754 A026755 this_sequence A026757 A026758 A026759

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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