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A033857 Numbers n such that j(n)*phi(n) = usigma(n), where j(n) = A033831, usigma(n) = sum of unitary divisors of n (A034448). 0
35, 44, 56, 105, 198, 418, 1254 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

If it exists, a(8) > 10^9. - Sean A. Irvine, Jul 20 2020

LINKS

Table of n, a(n) for n=1..7.

CROSSREFS

Cf. A000010 (phi), A034448 (usigma), A033831.

Sequence in context: A298156 A167326 A141638 * A110264 A034105 A034115

Adjacent sequences:  A033854 A033855 A033856 * A033858 A033859 A033860

KEYWORD

nonn,more

AUTHOR

Naohiro Nomoto

STATUS

approved

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Last modified September 29 22:48 EDT 2022. Contains 357092 sequences. (Running on oeis4.)