A033853 Integers k such that j(k)*d(k)=phi(k), where j = A033831.

3, 15, 56, 102, 228, 234, 384, 408, 510, 864, 936, 1092, 1140, 1170, 1920, 2040, 4320, 4680, 5460

Offset

1,1

Comments

If it exists, a(20) > 10^9. - Sean A. Irvine, Jul 19 2020

Links

Table of n, a(n) for n=1..19.

Crossrefs

Cf. A000005 (d), A000010 (phi), A033831.

Sequence in context: A081951 A367520 A346542 * A284014 A049187 A049161

Adjacent sequences: A033850 A033851 A033852 * A033854 A033855 A033856

Keyword

nonn,more

Author

Naohiro Nomoto

Extensions

a(17)-a(19) from Sean A. Irvine, Jul 19 2020

Status

approved