A111646 Subtracted divisor in admirable numbers.

2, 1, 6, 6, 5, 6, 6, 4, 6, 2, 6, 28, 2, 6, 1, 6, 60, 6, 28, 6, 6, 6, 28, 39, 6, 6, 90, 6, 28, 6, 6, 28, 6, 4, 6, 6, 6, 1, 6, 28, 6, 28, 6, 6, 6, 6, 6, 28, 1, 6, 336, 6, 6, 6, 28, 6, 6, 4, 28, 6, 6, 6, 15, 6, 16, 6, 28, 6, 6, 6, 6, 28, 6, 6, 6, 28, 6, 28, 6, 6, 28, 6, 6, 6, 6, 28, 496, 8, 6, 6, 6, 6

Offset: 1

Author

Jason Earls, Aug 10 2005

Keywords

• easy
• nonn

Examples

			a(1)=2 because 12 = 1+3+4+6-2, the 2 is subtracted. a(6)=6 because 42 = 1+2+3+7+14+21-6, the 6 is subtracted.
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A033880, A111592, A111667.

Formula

a(n) = A033880(A111592(n))/2 = A111667(n)/2. - Amiram Eldar, Jun 22 2019