A090761 Numbers n which occur at least three times in A001600.

27, 49, 51, 53, 89, 91, 96, 97, 101, 168, 169, 176, 181, 184, 188, 189, 191, 195, 240, 264, 285

Offset

1,1

References

T. Goto and S. Shibata, All numbers whose positive divisors have integral harmonic mean up to 300, Math. Comput. 73 (2004), 475-491.

Links

Table of n, a(n) for n=1..21.

Crossrefs

Cf. A001600, A090240.

Sequence in context: A155137 A155138 A031325 * A090760 A251143 A109067

Adjacent sequences: A090758 A090759 A090760 * A090762 A090763 A090764

Keyword

nonn,more

Author

R. K. Guy, Feb 08 2004

Status

approved