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A061950 Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 21 (most significant digit on right). 1
1, 3, 5, 7, 15, 25, 80, 321, 401, 1105, 1440, 2185, 17665, 26585, 132920, 287216, 659355, 1267785, 2096240, 3612505 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This sequence differs from A029514 in that all least significant zeros are removed before concatenation.

No more terms < 10^7. [Lars Blomberg, Oct 24 2011]

LINKS

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

Index entries for related sequences

EXAMPLE

See A061931 for example.

CROSSREFS

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

Sequence in context: A163979 A124248 A029514 * A166093 A165785 A261646

Adjacent sequences:  A061947 A061948 A061949 * A061951 A061952 A061953

KEYWORD

nonn,base,more

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(17)-a(20) from Lars Blomberg, Oct 24 2011

STATUS

approved

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Last modified January 22 05:11 EST 2019. Contains 319353 sequences. (Running on oeis4.)