A255167 a(n) = A072905(n) - A006255(n).

3, 2, 4, 5, 10, 12, 14, 3, 7, 22, 22, 7, 26, 35, 36, 9, 34, 5, 38, 15, 56, 55, 46, 22, 11, 65, 13, 23, 58, 78, 62, 5, 88, 85, 92, 13, 74, 95, 104, 40, 82, 112, 86, 44, 20, 115, 94, 21, 15, 9, 136, 52, 106, 26, 154, 54, 152, 145, 118, 60, 122, 155, 35, 17

Offset: 1

Author

Peter Kagey, Feb 15 2015

Keywords

• nonn

Comments

a(n) is strictly nonnegative because A072905 is an upper bound on A006255.

A066400(n) = 2 if and only if a(n) = 0.

a(n) > 0 for all n <= 10000.

Links

• Peter Kagey, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A072905, A006255, A066400.

Formula

a(n) = A072905(n) - A006255(n).