login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A063483 S[A002808(n)] where S[] is Boris Stechkin's function (A055004) and A002808(n) are the composites. 2
0, 0, 15, 64, 171, 252, 359, 656, 1079, 1346, 1656, 2415, 3373, 3927, 4550, 5993, 6793, 7690, 8653, 9697, 12028, 14695, 16158, 17731, 19398, 21174, 25017, 27108, 29318, 34077, 39324, 42128, 45071, 51398, 54716, 58239, 61877, 65685, 73758 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Harry J. Smith, Table of n, a(n) for n=0,...,1000

PROG

(PARI) S(n)=sum(k=2, n, (k-1)*floor(n*(k-1)/k)); j=[]; for(n=0, 80, if(isprime(n), n+1, j=concat(j, S(n)))); j

(PARI) { n=-1; for (m=0, 10^9, if (!isprime(m), a=sum(k=2, m, (k - 1)*floor(m*(k - 1)/k)); write("b063483.txt", n++, " ", a); if (n==1000, break)) ) } \\ Harry J. Smith, Aug 23 2009

CROSSREFS

Cf. A002808, A055004.

Sequence in context: A119496 A044153 A044534 * A320555 A347478 A082825

Adjacent sequences:  A063480 A063481 A063482 * A063484 A063485 A063486

KEYWORD

nonn

AUTHOR

Jason Earls, Jul 28 2001

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 27 10:23 EDT 2021. Contains 348274 sequences. (Running on oeis4.)