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A102414 Smallest semiprime greater than n-th prime. 5
4, 4, 6, 9, 14, 14, 21, 21, 25, 33, 33, 38, 46, 46, 49, 55, 62, 62, 69, 74, 74, 82, 85, 91, 106, 106, 106, 111, 111, 115, 129, 133, 141, 141, 155, 155, 158, 166, 169, 177, 183, 183, 194, 194, 201, 201, 213, 226, 235, 235, 235, 247, 247, 253, 259, 265, 274, 274 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A102415(n) < A000040(n) < a(n).

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Eric Weisstein's World of Mathematics, Semiprime

MATHEMATICA

ssp[n_]:=Module[{k=n+1}, While[PrimeOmega[k]!=2, k++]; k]; ssp/@Prime[Range[ 60]] (* Harvey P. Dale, Aug 18 2012 *)

PROG

(PARI) a(n) = {sp = prime(n)+1; while(bigomega(sp) != 2, sp++); sp; } \\ Michel Marcus, Mar 04 2017

CROSSREFS

Cf. A001358.

Sequence in context: A163925 A200609 A128037 * A127799 A213375 A226834

Adjacent sequences:  A102411 A102412 A102413 * A102415 A102416 A102417

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jan 08 2005

STATUS

approved

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Last modified October 21 22:47 EDT 2019. Contains 328315 sequences. (Running on oeis4.)