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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A043526 Numbers having two 9's in base 10. 1
99, 199, 299, 399, 499, 599, 699, 799, 899, 909, 919, 929, 939, 949, 959, 969, 979, 989, 990, 991, 992, 993, 994, 995, 996, 997, 998, 1099, 1199, 1299, 1399, 1499, 1599, 1699, 1799, 1899, 1909, 1919, 1929, 1939, 1949, 1959, 1969 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[2000], DigitCount[#, 10, 9]==2&] (* Harvey P. Dale, May 08 2018 *)

CROSSREFS

Subsequence of A011539.

Sequence in context: A157947 A097599 A033674 * A031500 A044431 A044812

Adjacent sequences:  A043523 A043524 A043525 * A043527 A043528 A043529

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

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 October 28 13:18 EDT 2021. Contains 348329 sequences. (Running on oeis4.)