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A061973 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 20 (most significant digit on right). 1
1, 19, 57, 741, 1653, 44707, 1434853, 4392463 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This sequence differs from A029537 in that all least significant zeros are kept during concatenation.

No more terms < 8*10^6. [Lars Blomberg, Jul 29 2011]

LINKS

Table of n, a(n) for n=1..8.

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: A251073 A176413 A263336 * A041702 A041704 A041706

Adjacent sequences:  A061970 A061971 A061972 * A061974 A061975 A061976

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(7)-a(8) from Lars Blomberg, Jul 29 2011

STATUS

approved

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Last modified January 21 19:47 EST 2019. Contains 319350 sequences. (Running on oeis4.)