A025644 Exponent of 3 (value of i) in n-th number of form 3^i*10^j.

0, 1, 2, 0, 3, 1, 4, 2, 0, 5, 3, 1, 6, 4, 2, 0, 7, 5, 3, 1, 8, 6, 4, 2, 0, 9, 7, 5, 3, 1, 10, 8, 6, 4, 2, 0, 11, 9, 7, 5, 3, 1, 12, 10, 8, 6, 4, 2, 0, 13, 11, 9, 7, 5, 3, 1, 14, 12, 10, 8, 6, 4, 2, 0, 15, 13, 11, 9, 7, 5, 3, 1, 16, 14, 12, 10, 8, 6, 4, 2, 0, 17, 15, 13, 11, 9, 7, 5, 3, 1, 18, 16, 14, 12, 10

Offset: 1

Author

David W. Wilson

Keywords

• nonn
• changed

Comments

Starts like A082375 but the pattern then becomes more irregular ..5, 3, 1, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, 23, 0, 21, 19, 17, 15, 13, 11, 9, 7, 5, 3, 24, 1, 22, 20,... - R. J. Mathar, Aug 27 2025

Crossrefs

Cf. A025616.