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A060939 a(n) = (Sum of the first n primes) + n. 2
3, 7, 13, 21, 33, 47, 65, 85, 109, 139, 171, 209, 251, 295, 343, 397, 457, 519, 587, 659, 733, 813, 897, 987, 1085, 1187, 1291, 1399, 1509, 1623, 1751, 1883, 2021, 2161, 2311, 2463, 2621, 2785, 2953, 3127, 3307, 3489, 3681, 3875, 4073, 4273, 4485, 4709 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Variation on question 6, p. 54, of Sullivan.

REFERENCES

N. Sullivan, Test Your Own IQ, Workman Publishing Co., New York, NY, 1994, p. 54.

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = A007504(n) + n. - Omar E. Pol, Dec 30 2013

MATHEMATICA

With[{nn=50}, Total/@Thread[{Accumulate[Prime[Range[nn]]], Range[nn]}]] (* Harvey P. Dale, Dec 27 2011 *)

PROG

(PARI) { s=0; n=0; forprime (p=2, prime(1000), s+=p; write("b060939.txt", n++, " ", s + n); ) } \\ Harry J. Smith, Jul 14 2009

CROSSREFS

Cf. A007504, A000290, A002378, A024916, A062736.

Sequence in context: A147409 A147342 A172310 * A174030 A098575 A138035

Adjacent sequences:  A060936 A060937 A060938 * A060940 A060941 A060942

KEYWORD

easy,nonn

AUTHOR

Jason Earls, May 06 2001

EXTENSIONS

Better description and more terms from Larry Reeves (larryr(AT)acm.org), May 08 2001

STATUS

approved

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Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)