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Product of prime(n) primes starting from prime(n).
3

%I #11 Mar 08 2022 08:24:13

%S 6,105,85085,215656441,2928046583754721,50774191064678342417,

%T 8893257265710151560293840093,456136734556614681201275816106457,

%U 413876828984538288243690385880996726353717

%N Product of prime(n) primes starting from prime(n).

%H Michel Marcus, <a href="/A075068/b075068.txt">Table of n, a(n) for n = 1..60</a>

%F a(n) = A002110(n - 1 + A000040(n)) / A002110(n - 1). - _Reinhard Zumkeller_, Jan 06 2005

%e a(1) = 2*3=6, a(2) = 3*5*7= 105, a(4) = product of 7 primes, from 7 up to 29.

%o (PARI) a(n) = my(N=n+prime(n)-1, vp = primes(N)); prod(k=n, N, vp[k]); \\ _Michel Marcus_, Mar 08 2022

%Y Cf. A000040, A002110.

%K nonn

%O 1,1

%A _Amarnath Murthy_, Sep 08 2002

%E More terms from _David Wasserman_, Jan 04 2005