Numbers m such that the numerator of Sum_{k=1..m, gcd(k,m) = 1} 1/k is divisible by m^3.

Terms

a(0) =1a(1) =39a(2) =78a(3) =155a(4) =310a(5) =465a(6) =546a(7) =793a(8) =798a(9) =930a(10) =1092a(11) =1586a(12) =1638a(13) =1860a(14) =2170a(15) =2379a(16) =2394a(17) =3172a(18) =3276a(19) =3965a(20) =4340a(21) =4758a(22) =4914a(23) =5219a(24) =6045a(25) =6510a(26) =7137a(27) =7182a(28) =7930a(29) =9516