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A025698 Index of 3^n within sequence of numbers of form 3^i*7^j. 0
1, 2, 4, 6, 9, 12, 16, 20, 25, 31, 37, 44, 51, 59, 67, 76, 86, 96, 107, 118, 130, 142, 155, 168, 182, 197, 212, 228, 244, 261, 278, 296, 315, 334, 354, 374, 395, 416, 438, 461, 484, 508, 532, 557, 582, 608, 634, 661, 689, 717, 746, 775, 805, 835, 866, 898, 930, 963, 996 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A194256 A194246 A024617 * A194211 A194250 A024610

Adjacent sequences:  A025695 A025696 A025697 * A025699 A025700 A025701

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 08:21 EST 2012. Contains 205998 sequences.