|
Search: id:A061546
|
|
|
| A061546 |
|
Harmonic mean of digits is 7. |
|
+0
1
|
|
| 7, 77, 777, 7777, 77777, 777777, 3999999, 4688999, 4689899, 4689989, 4689998, 4698899, 4698989, 4698998, 4699889, 4699898, 4699988, 4868999, 4869899, 4869989, 4869998, 4886999, 4888888, 4889699, 4889969, 4889996, 4896899
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
6666999 is a term since 7/(1/6+1/6+1/6+1/6+1/9+1/9+1/9)=7.
|
|
MATHEMATICA
|
Do[ h = IntegerDigits[n]; If[ Sort[h][[1]] != 0 && Length[h]/Apply[Plus, 1/h] == 7, Print[n]], {n, 1, 10^6}]
|
|
CROSSREFS
|
Cf. A062179-A062185, A061383-A061388, A061423-A061425.
Sequence in context: A068667 A043042 A144071 this_sequence A002281 A097983 A107866
Adjacent sequences: A061543 A061544 A061545 this_sequence A061547 A061548 A061549
|
|
KEYWORD
|
base,easy,nonn
|
|
AUTHOR
|
Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 13 2001
|
|
EXTENSIONS
|
More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 08 2001
|
|
|
Search completed in 0.002 seconds
|
