A090759 Numbers n which occur at least twice in A001600.

5, 13, 15, 17, 19, 24, 27, 29, 37, 44, 45, 46, 47, 49, 51, 53, 61, 73, 75, 85, 86, 87, 89, 91, 96, 97, 99, 101, 105, 107, 144, 145, 149, 168, 169, 171, 173, 176, 181, 184, 186, 187, 188, 189, 191, 195, 197, 203, 205, 224, 240, 245, 252, 264, 270, 272

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..56.

Crossrefs

Cf. A001600, A090240.

Sequence in context: A292565 A174069 A020996 * A090758 A327922 A309812

Adjacent sequences: A090756 A090757 A090758 * A090760 A090761 A090762

Keyword

nonn

Author

R. K. Guy, Feb 08 2004

Status

approved