A082791 Smallest k such that k*n begins with 2: a(n) = A082811(n)/n.

2, 1, 7, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3

Offset: 1

Author

Amarnath Murthy, Apr 19 2003

Keywords

• base
• easy
• nonn

Comments

a(n) is in {1, 2, 3, 4, 5, 6, 7, 11, 12, 13, 14}. [Charles R Greathouse IV, Mar 06 2011]

Links

• Zak Seidov, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A082784, A054850, A082786, A082787, A082788, A082789, A082811.

Programs

PARI

a(n)=forstep(k=n, 14*n, n, if(Vec(Str(k))[1]=="2", return(k/n))) \\ Charles R Greathouse IV, Mar 06 2011

Extensions

More terms from Zak Seidov, Mar 06 2011