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A025727 Index of 7^n within sequence of numbers of form 7^i*10^j. +0
1
1, 2, 4, 7, 11, 16, 22, 28, 35, 43, 52, 62, 73, 84, 96, 109, 123, 138, 154, 171, 188, 206, 225, 245, 266, 288, 310, 333, 357, 382, 408, 435, 463, 491, 520, 550, 581, 613, 646, 679, 713, 748, 784, 821, 859, 898, 937, 977, 1018, 1060, 1103, 1147, 1191, 1236, 1282, 1329 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A005311 A126613 A024224 this_sequence A025702 A025717 A025726

Adjacent sequences: A025724 A025725 A025726 this_sequence A025728 A025729 A025730

KEYWORD

nonn

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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