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A061960 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 7 (most significant digit on right). 1
1, 3, 12, 171, 324, 717, 867, 977, 2040, 6017, 13921, 54036, 81097, 88580, 265515, 306612, 349707, 1075152, 1189787, 2579041 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This sequence differs from A029524 in that all least significant zeros are kept during concatenation.

No more terms < 10^7.

LINKS

Table of n, a(n) for n=1..20.

Index entries for related sequences

EXAMPLE

See A061955 for example.

CROSSREFS

Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.

Sequence in context: A028301 A004168 A301650 * A120606 A089428 A211892

Adjacent sequences:  A061957 A061958 A061959 * A061961 A061962 A061963

KEYWORD

nonn,base

AUTHOR

Larry Reeves (larryr(AT)acm.org), May 24 2001

EXTENSIONS

Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002

a(18)-a(20) from Lars Blomberg, Aug 23 2011

STATUS

approved

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Last modified January 17 16:39 EST 2019. Contains 319235 sequences. (Running on oeis4.)