A102204 Iccanobirt semiprimes (14 of 15): Semiprime numbers in A102124.

4, 581, 72451, 789881, 92901661, 80528542, 89682664933, 36628597458132971, 8945663663547804571, 28420671229606403893, 9998333571760746216777082258511, 87894839031505105300173553652227351, 395837506159704761826300702753027374, 83686138907389068924615617486884954496701274604545267754241

Offset: 1

Author

Jonathan Vos Post and Ray Chandler, Dec 31 2004

Keywords

• nonn
• less
• base

Crossrefs

Cf. A001358, A102124, A102184, A102191-A102205.

Formula

a(n) = A102124(A102184(n)).

Extensions

Offset changed to 1 and more terms from Jinyuan Wang, Aug 15 2021