a(1)=1. a(n) = A005179(d(a(n-1))) + a(n-1), where d(n) = the number of divisors of n, and A005179(n) is the smallest positive integer with exactly n divisors.
A175300
a(1)=1. a(n) = A005179(d(a(n-1))) + a(n-1), where d(n) = the number of divisors of n, and A005179(n) is the smallest positive integer with exactly n divisors.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =8a(4) =14a(5) =20a(6) =32a(7) =44a(8) =56a(9) =80a(10) =128a(11) =152a(12) =176a(13) =224a(14) =284a(15) =296a(16) =320a(17) =512a(18) =560a(19) =800a(20) =980a(21) =1160a(22) =1280a(23) =1460a(24) =1520a(25) =1760a(26) =2120a(27) =2240a(28) =3200a(29) =3560
External references
- oeis: A175300