login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A043520 Numbers n such that number of 7's in base 10 is 4. 0
7777, 17777, 27777, 37777, 47777, 57777, 67777, 70777, 71777, 72777, 73777, 74777, 75777, 76777, 77077, 77177, 77277, 77377, 77477, 77577, 77677, 77707, 77717, 77727, 77737, 77747, 77757, 77767, 77770, 77771, 77772 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A017345 A017465 A017597 * A194352 A045277 A099498

Adjacent sequences:  A043517 A043518 A043519 * A043521 A043522 A043523

KEYWORD

nonn,base

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 16 04:47 EST 2012. Contains 205860 sequences.