A102203 Iccanobirt semiprimes (13 of 15): Semiprime numbers in A102123.

4, 26, 49, 1651, 44311, 38141, 45901, 990681, 8041777, 60558487, 8252802091, 1348187591, 11280376871, 49455591538, 1658081357516741, 15268848817955861, 6791980801494070261, 8278821177559776598, 759117158185214871379, 47088657278621730593201, 187491222710962870446779

Offset

1,1

Links

Table of n, a(n) for n=1..21.

Formula

a(n) = A102123(A102183(n)).

Crossrefs

Cf. A001358, A102123, A102183, A102191-A102205.

Sequence in context: A196672 A376169 A306611 * A219668 A273981 A099442

Adjacent sequences: A102200 A102201 A102202 * A102204 A102205 A102206

Keyword

nonn,less,base

Author

Jonathan Vos Post and Ray Chandler, Dec 31 2004

Extensions

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

Status

approved