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!)
A037354 Numbers whose base-4 and base-7 expansions have no digits in common. 1
4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 19, 20, 21, 24, 25, 26, 32, 33, 34, 38, 39, 40, 41, 42, 43, 46, 47, 48, 60, 62, 63, 116, 117, 150, 153, 160, 204, 207, 212, 215, 228, 229, 230, 231, 232, 235, 236, 237, 238, 239, 240, 242, 243, 244, 245 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Range[500], Intersection[IntegerDigits[#, 4], IntegerDigits[#, 7]]=={}&] (* Vincenzo Librandi, Jun 07 2012 *)

CROSSREFS

Sequence in context: A087947 A053427 A272054 * A328983 A223133 A295485

Adjacent sequences:  A037351 A037352 A037353 * A037355 A037356 A037357

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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 28 12:59 EDT 2022. Contains 354907 sequences. (Running on oeis4.)