A102176 Iccanobirt semiprime indices (6 of 15): Indices of semiprime numbers in A102116.

5, 9, 15, 22, 38, 44, 67, 84, 148, 154, 162, 186, 189, 227, 228, 275, 280, 285, 298, 349

Offset: 1

Author

Jonathan Vos Post and Ray Chandler, Dec 31 2004

Keywords

• nonn
• more
• less
• base

Crossrefs

Cf. A001358, A102116, A102171-A102185, A102196.

Formula

A102116(a(n)) = A102196(n).

Extensions

Offset changed to 1 and a(14)-a(20) from Jinyuan Wang, Aug 12 2021