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A029495
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Numbers n such that n divides the (right) 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 A061931 in that all least significant zeros are kept during concatenation.
No more terms < 10^7. [Lars Blomberg, Oct 01 2011]
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LINKS
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Table of n, a(n) for n=1..3.
Index entries for related sequences
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EXAMPLE
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12345 -> (1)(01)(11)(001)(101) base 2 -> 10111001101 base 2 = 1485 and 5 divides 1485.
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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: A053516 A085523 A152425 * A086900 A200002 A203684
Adjacent sequences: A029492 A029493 A029494 * A029496 A029497 A029498
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KEYWORD
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nonn,base,bref
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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, more terms and example from Larry Reeves (larryr(AT)acm.org), May 25 2001
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STATUS
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approved
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