A181813 a(n)=smallest integer that, upon multiplying any integer from 1 to n, produces a member of A025487.

1, 1, 2, 2, 12, 12, 360, 360, 720, 720, 151200, 151200, 349272000, 349272000, 349272000, 349272000, 10488638160000, 10488638160000, 5354554667061600000, 5354554667061600000, 5354554667061600000, 5354554667061600000

Offset: 1

Author

Matthew Vandermast, Nov 30 2010

Keywords

• nonn

Examples

			For integers k = 1 to 6, 12k (12, 24, 36, 48, 60, 72) is always a member of A025487. 12 is the smallest integer with this property; therefore, a(6) = 12.
		

Crossrefs

All terms belong to A181818.

Formula

If A003418(n) = Product p(i)^e(i), then a(n) = Product A002110(i-1)^e(i). I.e., a(n) = A181811(A003418(n)).

a(n) = A181814(n)/A003418(n).