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A029519
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Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 2 (most significant digit on right).
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142
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OFFSET
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1,2
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COMMENTS
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This sequence differs from A061955 in that all least significant zeros are removed before concatenation.
No more terms < 10^7. [Lars Blomberg, Aug 31 2011]
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LINKS
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Table of n, a(n) for n=1..8.
Index entries for related sequences
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EXAMPLE
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7654321 -> (111)(011)(101)(001)(11)(01)(1) base 2 -> 1111110111111 base 2 = 8127 and 7 divides 8127
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CROSSREFS
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Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
Sequence in context: A041663 A042825 A076033 * A045424 A106968 A191081
Adjacent sequences: A029516 A029517 A029518 * A029520 A029521 A029522
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KEYWORD
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nonn,base,more
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AUTHOR
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Olivier Gérard
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EXTENSIONS
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Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12, 2002
Additional comments and example from Larry Reeves (larryr(AT)acm.org), May 25 2001
Terms verified by Rick L. Shepherd, Feb 24 2009
1 more term from Sean A. Irvine, Oct 04 2009
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STATUS
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approved
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