A061954 - OEIS

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A061954

Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 25 (most significant digit on right).

142

1, 3, 5, 9, 15, 21, 96, 99, 259, 1317, 2112, 52711, 72483, 124069, 633696, 651632, 2391984, 4317312, 8101536, 8344672

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OFFSET

1,2

COMMENTS

This sequence differs from A029518 in that all least significant zeros are removed before concatenation.

No more terms < 10^7. [Lars Blomberg, Oct 26 2011]

LINKS

Table of n, a(n) for n=1..20.

Index entries for related sequences

EXAMPLE

See A061931 for example.

MATHEMATICA

b = 25; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[c, IntegerDigits[IntegerReverse[#, b], b]], b], #] &] (* Robert Price, Mar 08 2020 *)

CROSSREFS

Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.

Sequence in context: A161388 A229552 A029518 * A095039 A022940 A025207

Adjacent sequences: A061951 A061952 A061953 * A061955 A061956 A061957

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(20) from Lars Blomberg, Oct 26 2011

STATUS

approved