A259086 a(n) = largest k such that the decimal representation of prime(n)^k does not contain the digit 2.

168, 59, 1, 28, 38, 25, 16, 22, 28, 20, 22, 7, 19, 20, 4, 10, 27, 11, 8, 13, 13, 12, 5, 23, 23, 18, 42, 7, 31, 4, 10, 13, 11, 5, 11, 11, 8, 12, 12, 9, 7, 10, 10, 4, 7, 10, 3, 18, 7, 0, 8, 3, 6, 2, 8, 4, 12, 5, 4, 5, 6, 4, 8, 16, 2, 3, 5, 2, 7, 11, 12, 1, 5, 9

Offset: 1

Author

N. J. A. Sloane, Jun 18 2015

Keywords

• nonn
• base

Comments

These values are only conjectural.

Links

• Hiroaki Yamanouchi, Table of n, a(n) for n = 1..500
• Popular Computing (Calabasas, CA), Two Tables, Vol. 1, (No. 9, Dec 1973), page PC9-16.

Crossrefs

Cf. A094776, A259081-A259085.

Extensions

a(14)-a(74) from Hiroaki Yamanouchi, Jun 19 2015