A102927 Partial products of A102926.

2, 6, 30, 870, 9570, 66990, 870870, 32222190, 547777230, 43274401170, 995311226910, 4109640055911390, 793160530790898270, 2056665256340799214110, 207723190890420720625110

Offset: 1

Author

Marc LeBrun, Jan 19 2005

Keywords

• nonn

Comments

Terms up to a(111) are known from the b-file for A102926. Term a(112) requires us to find the smallest prime factor of at least one of the C472's a(111)+/-1. The companion sequence is listed on the OEIS wiki page "OEIS sequences needing factors" and the corresponding thread on mersenneforum.org. - M. F. Hasler, Mar 21 2013

Examples

			a(4) = 2*3*5*29 = 870.
		

Crossrefs

Cf. A000945, A005265, A102926.

Formula

Product A102926(k), 1<=k<=n.