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A102203 Iccanobirt semiprimes (13 of 15): Semiprime numbers in A102123. 1
4, 26, 49, 1651, 44311, 38141, 45901, 990681, 8041777, 60558487, 8252802091, 1348187591, 11280376871, 49455591538, 1658081357516741, 15268848817955861, 6791980801494070261, 8278821177559776598, 759117158185214871379, 47088657278621730593201, 187491222710962870446779 (list; graph; refs; listen; history; text; internal format)
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: A056193 A196672 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

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Last modified September 23 20:42 EDT 2021. Contains 347617 sequences. (Running on oeis4.)