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”).

A329292
Least number m > 0 such that A101337(m)/m = n, or 0 if no such m exists.
3
1, 459, 3194922, 174961, 119564, 0, 13598
OFFSET
1,2
COMMENTS
Subsequence of A306360, therefore also finite.
FORMULA
a(n) = min { m in A306360 | A101337(m)/m = n }.
PROG
(PARI) {A329292=vector(vecmax(A329291), k, iferr(for(i=1, #A329291, A329291[i]==k&&error(k=A306360[i])), E, k))} \\ If A329291 is not complete, there may be erroneous 0's
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
M. F. Hasler, Nov 17 2019
EXTENSIONS
a(6)-a(7) from Chai Wah Wu, Nov 18 2019 using b-file of A306360
STATUS
approved