A061958 - OEIS

A061958

Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 5 (most significant digit on right).

1, 32, 304, 639, 704, 903, 3151, 4112, 6713, 34992, 96977, 2628797, 3070243, 3661679, 8665399

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OFFSET

1,2

COMMENTS

This sequence differs from A029522 in that all least significant zeros are kept during concatenation.

No more terms < 10^7.

LINKS

EXAMPLE

See A061955 for example.

MATHEMATICA

b = 5; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[Reverse[IntegerDigits[#, b]], c], b], #] &] (* Robert Price, Mar 07 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(12)-a(15) from Lars Blomberg, Aug 26 2011

STATUS

approved