1,2

Multiplicative closure of A000043. - Charles R Greathouse IV, Feb 21 2013

Ivan Neretin, Table of n, a(n) for n = 1..10000

a(n) = A122254(n) = A122260(n) for n < 22. - Reinhard Zumkeller, Aug 29 2006

Sequence in context: A052081 A031995 A023752 * A122260 A122254 A249626

Adjacent sequences: A048734 A048735 A048736 * A048738 A048739 A048740

nonn

J. Lowell

More terms from James A. Sellers, Apr 22 2000

approved