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A020648 Least positive integer k for which 9^n divides k!. 1
1, 6, 9, 15, 18, 24, 27, 30, 36, 39, 45, 48, 54, 54, 60, 63, 69, 72, 78, 81, 81, 87, 90, 96, 99, 105, 108, 111, 117, 120, 126, 129, 135, 135, 141, 144, 150, 153, 159, 162, 162, 168, 171, 177, 180, 186, 189, 192, 198, 201, 207, 210, 216, 216, 222, 225, 231, 234, 240, 243, 243 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

T. D. Noe, Table of n, a(n) for n=0..1000

CROSSREFS

Sequence in context: A185398 A139322 A139321 * A020147 A164383 A168544

Adjacent sequences:  A020645 A020646 A020647 * A020649 A020650 A020651

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified February 15 21:41 EST 2012. Contains 205860 sequences.