# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a061546 Showing 1-1 of 1 %I A061546 #4 May 10 2013 12:44:46 %S A061546 7,77,777,7777,77777,777777,3999999,4688999,4689899,4689989,4689998, %T A061546 4698899,4698989,4698998,4699889,4699898,4699988,4868999,4869899, %U A061546 4869989,4869998,4886999,4888888,4889699,4889969,4889996,4896899 %N A061546 Harmonic mean of digits is 7. %e A061546 6666999 is a term since 7/(1/6+1/6+1/6+1/6+1/9+1/9+1/9)=7. %t A061546 Do[ h = IntegerDigits[n]; If[ Sort[h][[1]] != 0 && Length[h]/Apply[Plus, 1/h] == 7, Print[n]], {n, 1, 10^6}] %Y A061546 Cf. A062179-A062185, A061383-A061388, A061423-A061425. %K A061546 base,easy,nonn %O A061546 1,1 %A A061546 _Vladeta Jovovic_, Jun 13 2001 %E A061546 More terms from _Robert G. Wilson v_, Aug 08 2001 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE