OFFSET
1,1
FORMULA
a(n) = A030661(a(n-1)). - R. J. Mathar, Aug 09 2019
MAPLE
A030642 := proc(n)
option remember ;
if n = 1 then
2;
else
A030661(procname(n-1)) ;
end if;
end proc:
seq(A030642(n), n=1..6) ; R. J. Mathar, Aug 09 2019
MATHEMATICA
NestList[NextPrime[#] NextPrime[NextPrime[#]]&, 2, 10] (* Harvey P. Dale, Jul 26 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved