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A109722 Sum of first 2n primes. 4
0, 5, 17, 41, 77, 129, 197, 281, 381, 501, 639, 791, 963, 1161, 1371, 1593, 1851, 2127, 2427, 2747, 3087, 3447, 3831, 4227, 4661, 5117, 5589, 6081, 6601, 7141, 7699, 8275, 8893, 9523, 10191, 10887, 11599, 12339, 13101, 13887, 14697, 15537, 16401, 17283 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Bisection of A007504.

LINKS

Table of n, a(n) for n=0..43.

FORMULA

a(n) = A007504(2n).

MATHEMATICA

f[n_] := Sum[Prime[k], {k, n}]; Table[f[2n], {n, 0, 43}]

CROSSREFS

Cf. A007504, A109723-A109726.

Sequence in context: A217622 A269728 A091864 * A097121 A007904 A139545

Adjacent sequences:  A109719 A109720 A109721 * A109723 A109724 A109725

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Aug 10 2005

EXTENSIONS

Edited and extended by Ray Chandler, Aug 11 2005

STATUS

approved

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Last modified July 21 02:57 EDT 2017. Contains 289629 sequences.