Positive integers where the number of triples of divisors (d1, d2, d3) such that d1 < d2 < d3 < 2*d1 and each pair of these divisors is pairwise coprime, sets a new record.
A333966
Positive integers where the number of triples of divisors (d1, d2, d3) such that d1 < d2 < d3 < 2*d1 and each pair of these divisors is pairwise coprime, sets a new record.
Terms
- a(0) =1a(1) =60a(2) =280a(3) =420a(4) =840a(5) =1260a(6) =2520a(7) =6930a(8) =9240a(9) =13860a(10) =27720a(11) =55440a(12) =60060a(13) =120120a(14) =180180a(15) =240240a(16) =360360a(17) =720720a(18) =1021020a(19) =1801800a(20) =2042040a(21) =2282280a(22) =2762760a(23) =3063060a(24) =4084080a(25) =4564560a(26) =6126120a(27) =12252240a(28) =19399380a(29) =24504480
External references
- oeis: A333966