A025689 - OEIS

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A025689

Exponent of 10 (value of j) in n-th number of form 7^i*10^j.

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,6

LINKS

Table of n, a(n) for n=1..104.

CROSSREFS

Sequence in context: A233381 A025680 A025667 * A025650 A025674 A025681

Adjacent sequences: A025686 A025687 A025688 * A025690 A025691 A025692

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved