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!)
A039132 Numbers n such that representation in base 10 has same number of 2's and 7's. 0
0, 1, 3, 4, 5, 6, 8, 9, 10, 11, 13, 14, 15, 16, 18, 19, 27, 30, 31, 33, 34, 35, 36, 38, 39, 40, 41, 43, 44, 45, 46, 48, 49, 50, 51, 53, 54, 55, 56, 58, 59, 60, 61, 63, 64, 65, 66, 68, 69, 72, 80, 81, 83, 84, 85, 86, 88, 89, 90, 91, 93, 94, 95, 96, 98, 99, 100, 101, 103 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..69.

MATHEMATICA

dg27Q[n_]:=Module[{dc=DigitCount[n]}, dc[[2]]==dc[[7]]]; Select[Range[ 0, 110], dg27Q] (* Harvey P. Dale, Nov 19 2011 *)

CROSSREFS

Sequence in context: A099352 A047207 A266728 * A187970 A122488 A241403

Adjacent sequences:  A039129 A039130 A039131 * A039133 A039134 A039135

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

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 February 26 21:58 EST 2020. Contains 332295 sequences. (Running on oeis4.)