login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A130428 List of numbers n such that n is equal to the number of 6's in the decimal digits of all numbers <= n. 14

%I #14 May 24 2023 17:19:36

%S 0,9500000000,9628399986,9628399987,9628399988,9628399989,9628399990,

%T 9628399991,9628399992,9628399993,9628399994,9628399995,10000000000,

%U 19500000000,19628399986,19628399987,19628399988,19628399989

%N List of numbers n such that n is equal to the number of 6's in the decimal digits of all numbers <= n.

%C A finite sequence with 72 terms.

%H Graeme McRae, May 26 2007, <a href="/A130428/b130428.txt">Table of n, a(n) for n = 1..72</a> (full sequence)

%H Tanya Khovanova and Gregory Marton, <a href="https://arxiv.org/abs/2305.10357">Archive Labeling Sequences</a>, arXiv:2305.10357 [math.HO], 2023. See p. 4.

%e a(5)=9628399988 because the number of 6's in the decimal digits of the numbers from 0 to 9628399988 is 9628399988 and this is the 5th such number.

%Y Cf. A014778 for proof these sequences are finite; Also A101639, A101640, A101641, A130427, A130429, A130430, A130431; Cf. A130432 for the number of numbers in these sequences.

%K base,fini,full,nonn

%O 1,2

%A _Graeme McRae_, May 26 2007

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)