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A091864
Positive integers n such that Sum_{p<=pi(n)} p = n, where pi(x) denotes the number of primes not exceeding x and the summation is over primes p.
0
5, 17, 41, 77, 100
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..5.
S. W. Golomb,
A Perfect Property of Handful of 2 Numbers, Problem E3385
, Amer. Math. Monthly, 98 (No. 9, 1991), 858-859.
CROSSREFS
Sequence in context:
A144620
A217622
A269728
*
A304079
A109722
A097121
Adjacent sequences:
A091861
A091862
A091863
*
A091865
A091866
A091867
KEYWORD
nonn
,
fini
,
full
AUTHOR
Robert G. Wilson v
, Mar 13 2004
STATUS
approved
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Last modified August 12 13:29 EDT 2024. Contains 375108 sequences. (Running on oeis4.)