

A061966


Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 13 (most significant digit on right).


1



1, 3, 9, 15, 16, 33, 285, 867, 5683, 14205, 21075, 27120, 31403, 388601, 1037577, 1246064
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OFFSET

1,2


COMMENTS

This sequence differs from A029530 in that all least significant zeros are kept during concatenation.
No more terms < 10^7. [Lars Blomberg, Aug 15 2011]


LINKS

Table of n, a(n) for n=1..16.
Index entries for related sequences


EXAMPLE

See A061955 for example.


MATHEMATICA

b = 13; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[Reverse[IntegerDigits[#, b]], c], b], #] &] (* Robert Price, Mar 09 2020 *)


CROSSREFS

Cf. A029447A029470, A029471A029494, A029495A029518, A029519A029542, A061931A061954, A061955A061978.
Sequence in context: A090158 A030342 A273323 * A085328 A291347 A062220
Adjacent sequences: A061963 A061964 A061965 * A061967 A061968 A061969


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(15)a(16) from Lars Blomberg, Aug 15 2011


STATUS

approved



