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!)
A031960 Number of distinct base 8 digits is 3. 1
66, 67, 68, 69, 70, 71, 80, 83, 84, 85, 86, 87, 88, 90, 92, 93, 94, 95, 96, 98, 99, 101, 102, 103, 104, 106, 107, 108, 110, 111, 112, 114, 115, 116, 117, 119, 120, 122, 123, 124, 125, 126, 129, 131, 132, 133, 134, 135, 136, 139, 140 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..51.

Index entries for 2-automatic sequences.

MATHEMATICA

dd8Q[n_]:=Length[Union[IntegerDigits[n, 8]]]==3; Select[Range[200], dd8Q] (* Harvey P. Dale, Nov 10 2013 *)

PROG

(PARI) is(n)=#Set(digits(n, 8))==3 \\ Charles R Greathouse IV, Feb 15 2017

CROSSREFS

Sequence in context: A071712 A080592 A059175 * A181464 A250739 A124142

Adjacent sequences:  A031957 A031958 A031959 * A031961 A031962 A031963

KEYWORD

nonn,base,easy

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 April 6 11:51 EDT 2020. Contains 333273 sequences. (Running on oeis4.)