login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A074106
a(1)=1; a(n) is the minimal unused odd prime such that the sum a(1)+a(2)+...+a(n) is divisible by n.
0
1, 3, 5, 7, 19, 13, 29, 11, 47
OFFSET
1,2
COMMENTS
Sequence is finite. The sum of the first 9 terms is 135. For the next term to give a sum that is a multiple of 10, the term must itself be divisible by 5. However, the prime 5 has already been used. - Matthew Conroy, Aug 28 2002
CROSSREFS
Sequence in context: A184875 A112986 A052333 * A002261 A263257 A261456
KEYWORD
fini,full,nonn
AUTHOR
Amarnath Murthy, Aug 22 2002
STATUS
approved