A187043 Number of factors in expansion of infinitary perfect numbers (A007357) over distinct terms of A050376.

2, 3, 3, 5, 6, 7, 7, 7, 8, 9, 8, 9, 9, 10, 10, 11, 11, 12, 13, 12, 13, 14, 14, 15, 16, 17, 18, 19, 19, 19, 20, 21, 21, 23, 22, 23

Offset: 1

Author

Vladimir Shevelev, Mar 02 2011

Keywords

• nonn

Comments

All terms beyond a(17) should be regarded conjectural, because they reach beyond the known terms in A007357. - R. J. Mathar, Mar 30 2011

Examples

			Consider A007357(3)=90. It is a unique product 2*5*9 of distinct terms of A050376. Thus a(3)=3.
		

Crossrefs

Cf. A050376, A007357

Formula

a(n) = A064547(A007357(n)). - R. J. Mathar, Mar 30 2011