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A030642 Product of next 2 primes. 2

%I

%S 2,15,323,111547,12449873237,154999344563559225589,

%T 24024796815132956872884975543558130445497

%N Product of next 2 primes.

%F a(n) = A030661(a(n-1)). - _R. J. Mathar_, Aug 09 2019

%p A030642 := proc(n)

%p option remember ;

%p if n = 1 then

%p 2;

%p else

%p A030661(procname(n-1)) ;

%p end if;

%p end proc:

%p seq(A030642(n),n=1..6) ; _R. J. Mathar_, Aug 09 2019

%t NestList[NextPrime[#] NextPrime[NextPrime[#]]&,2,10] (* _Harvey P. Dale_, Jul 26 2017 *)

%Y Cf. A000040, A030641.

%K nonn

%O 1,1

%A _N. J. A. Sloane_.

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Last modified September 18 09:22 EDT 2020. Contains 337166 sequences. (Running on oeis4.)