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A134128 a(n) = A007504(A134126(n)). 5
2, 5, 17, 58, 129, 5117, 43201, 329401, 1459228, 111461983, 269553485, 316504138, 734845192, 6185946407, 10731178047, 22691403557, 148086969623, 474635764987, 6777574922490, 30458710811303 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
This is the prime partial sum just before the prime is added to achieve an integer mean as defined in A134125.
LINKS
EXAMPLE
The sequence begins with a(1)=2 (to which 3 is added which leads to a sum 5 associated with A134125(1)).
a(4) = 58 (to which the prime 19 is added, a sum of 77, associated with A134125(4)).
PROG
(UBASIC) 10 'primes using counters 20 N=3:C=1:R=5:print 2; 3, 5 30 A=3:S=sqrt(N) 40 B=N\A 50 if B*A=N then N=N+2:goto 30 60 A=A+2:O=A 70 if A<=sqrt(N) then 40 80 C=C+1 90 R=R+N:T=R/C:U=R-N 100 if T=int(T) then print C; U; N; R; T:stop 110 N=N+2:goto 30
CROSSREFS
Sequence in context: A149990 A149991 A149992 * A119254 A278394 A056679
KEYWORD
less,nonn
AUTHOR
Enoch Haga, Oct 09 2007
EXTENSIONS
Edited by R. J. Mathar, Apr 17 2009
STATUS
approved

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Last modified March 29 06:34 EDT 2024. Contains 371265 sequences. (Running on oeis4.)