1,1

This sequence is different from A070826 and/or A118750

Compute the product of k consecutive sequences of prime factors 3,5,7,11,etc. where k=1,2,3,4,5,etc. Where odd composite N is followed by prime N+2 add N to the sequence.

a(1)=9 because k=1 with prime factor 3 and 9+2=11, prime

Cf. A136349-A136353 A136355-A136358 A070826 A118750.

Sequence in context: A100663 A029712 A136353 this_sequence A098146 A124274 A075134

Adjacent sequences: A136351 A136352 A136353 this_sequence A136355 A136356 A136357

easy,more,nonn,uned

Enoch Haga (Enokh(AT)comcast.net), Dec 25 2007