# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a228529 Showing 1-1 of 1 %I A228529 #22 Mar 01 2022 11:21:28 %S A228529 3,13,47,107,257,397,653,881,1279,1889,2293,3119,3847,4423,5323,6563, %T A228529 7937,8819,10391,11833,12889,14831,16477,18713,21599,23603,25189, %U A228529 27409,29063,31511,37159,39869,43321,45589,50923,53281,57271,61561,65173,69821,74383 %N A228529 a(n) = prime(n*prime(n)). %F A228529 a(n) = A000040(A033286(n)). %e A228529 For n = 2, prime(2*prime(2)) = prime(2*3) = prime(6) = 13, so a(2) = 13. %t A228529 Table[Prime[n*Prime[n]], {n, 100}] (* _T. D. Noe_, Oct 22 2013 *) %o A228529 (PARI) a(n) = prime(n*prime(n)); \\ _Michel Marcus_, Oct 22 2013 %Y A228529 Cf. A000040, A006450, A033286, A036689, A080697, A217622, A230098, A230325, A230285, A230460. %K A228529 nonn %O A228529 1,1 %A A228529 _Omar E. Pol_, Oct 20 2013 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE