login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A029542 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 25 (most significant digit on right). 142
1, 3, 9, 21, 27, 48, 144, 352, 361, 4672, 5904, 7392, 15323, 25488, 32096, 55491, 71712, 89259, 101437, 139776, 752011, 2215168, 5082544, 6766761 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This sequence differs from A061978 in that all least significant zeros are removed before concatenation.

No more terms < 10^7. - Lars Blomberg, Oct 01 2011

LINKS

Table of n, a(n) for n=1..24.

Index entries for related sequences

EXAMPLE

See A029519 for example.

MATHEMATICA

b = 25; c = {}; Select[Range[10^4], Divisible[FromDigits[c = Join[IntegerDigits[IntegerReverse[#, b], b], c], b], #] &] (* Robert Price, Mar 13 2020 *)

CROSSREFS

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

Sequence in context: A275450 A244972 A044055 * A014962 A014945 A045590

Adjacent sequences:  A029539 A029540 A029541 * A029543 A029544 A029545

KEYWORD

nonn,base,more

AUTHOR

Olivier Gérard

EXTENSIONS

Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12 2002

Additional comments and more terms from Larry Reeves (larryr(AT)acm.org), Jun 04 2001

a(21)-a(24) from Lars Blomberg, Oct 01 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 2 01:23 EST 2020. Contains 338864 sequences. (Running on oeis4.)