proposed
approved
editing
Edited and extended by Don Reble and _Klaus Brockhaus_ _, May 31 2004
Cf. A000396 (positions of 6's), A005820 (positions of 120's).
a(n) is the least k which has the same abundancy index as n, that is, minimal k for which sigma(k)/k = sigma(n)/n. - Antti Karttunen, Jul 10 2019
Cf. A000203, A050972, A050973, A094757, A094758, A000203A326200.
Edited and extended by _Don Reble (djr(AT)nk.ca) _ and Klaus Brockhaus May 31 2004
OEIS Server: https://oeis.org/edit/global/2703
reviewed
Michel Marcus: Well, it was not really intentional. Yes sure, Jon.