A146993 Number of terms in A145848 with exactly 2n decimal digits.

1, 1, 5, 1, 12, 1, 24, 2, 47, 2, 53, 1, 70, 1

Offset: 1

Author

Zak Seidov, Nov 04 2008

Keywords

• more
• nonn
• base

Comments

It is shown by I. Bernshtein, see link, that a(2n+1)>=1 and 1<=a(2n)<=2. Thanks to Tanya Khovanova for this link.

Links

• I. Bernshtein, Solution of problem M460.

Crossrefs

Cf. A145848, A146991.

Extensions

Definition, comment, and a(11) corrected, and a(12)-a(14) added, by Jon E. Schoenfield, Nov 19 2008