A061968 - OEIS

A061968

Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 15 (most significant digit on right).

1, 7, 28, 77, 211, 308, 343, 553, 791, 2177, 3928, 46519

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OFFSET

1,2

COMMENTS

This sequence differs from A029532 in that all least significant zeros are kept during concatenation.

No more terms < 10^7. - Lars Blomberg, Aug 09 2011

LINKS

EXAMPLE

See A061955 for example.

MATHEMATICA

b = 15; 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

STATUS

approved