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: A116119 A039600 A143847 this_sequence A161482 A044428 A044809

Adjacent sequences: A090759 A090760 A090761 this_sequence A090763 A090764 A090765

nonn,more

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