A025677 Exponent of 8 (value of i) in n-th number of form 8^i*10^j.

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

Offset: 1

Author

David W. Wilson

Keywords

• nonn

Crossrefs

Cf. A025634.

Programs

Mathematica

Take[Sort[Flatten[Table[{8^i 10^j,i},{i,0,20},{j,0,20}],1]][[;;,2]],110] (* Harvey P. Dale, Jul 22 2025 *)