A061965 - OEIS

A061965

Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 12 (most significant digit on right).

1, 11, 14147, 22991, 713339

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OFFSET

1,2

COMMENTS

This sequence differs from A029529 in that all least significant zeros are kept during concatenation.

No more terms < 10^7. [Lars Blomberg, Aug 17 2011]

LINKS

EXAMPLE

See A061955 for example.

MATHEMATICA

b = 12; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[Reverse[IntegerDigits[#, b]], c], b], #] &] (* Robert Price, Mar 09 2020 *)

CROSSREFS

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(5) from Lars Blomberg, Aug 17 2011

STATUS

approved