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A020964 Sum of Floor[ 3*(1+sqrt(2))^(n-k) ] for k from 1 to infinity. +0
1
4, 11, 28, 70, 171, 417, 1010, 2444, 5905, 14263, 34441, 83155, 200761, 484687, 1170145, 2824987, 6820129, 16465257, 39750655, 95966583, 231683847, 559334311, 1350352487, 3260039399, 7870431463, 19000901863 (list; graph; listen)
OFFSET

1,1

REFERENCES

C. Kimberling, Problem 10520 in Amer. Math. Mon. 103 (1996) p. 347.

CROSSREFS

Sequence in context: A099326 A127985 A005409 this_sequence A113067 A152689 A000604

Adjacent sequences: A020961 A020962 A020963 this_sequence A020965 A020966 A020967

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

EXTENSIONS

Revised Feb 03 1999.

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


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