A061970 - OEIS

A061970

Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 17 (most significant digit on right).

1, 25, 64, 67, 1477, 118531, 421353, 573333, 799155

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OFFSET

1,2

COMMENTS

This sequence differs from A029534 in that all least significant zeros are kept during concatenation.

No more terms < 8*10^6.

LINKS

EXAMPLE

See A061955 for example.

MATHEMATICA

b = 17; 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; Aug 25, 2002

a(9) from Lars Blomberg, Aug 04 2011

STATUS

approved