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A033468 Partial sums of sequence {1/(n^2+1)} (denominators). 0
1, 2, 10, 5, 85, 2210, 81770, 204425, 204425, 16762850, 1693047850, 51637959425, 1497500823325, 2995001646650, 590015324390050, 33335865828037825, 8567317517805721025, 17134635035611442050 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Sequence in context: A114232 A070730 A082192 * A047816 A095845 A105801

Adjacent sequences:  A033465 A033466 A033467 * A033469 A033470 A033471

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 10 07:57 EST 2016. Contains 268149 sequences.