1,1

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

Cf. A001600, A090240.

Sequence in context: A043928 A059658 A031325 this_sequence A090760 A109067 A034595

Adjacent sequences: A090758 A090759 A090760 this_sequence A090762 A090763 A090764

nonn,more

R. K. Guy (rkg(AT)cpsc.ucalgary.ca), Feb 08 2004