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n appears A055642(n) times (appearances equal number of decimal digits).
1

%I #5 Oct 23 2019 22:15:37

%S 0,1,2,3,4,5,6,7,8,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,

%T 18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,

%U 29,30,30,31,31,32,32,33,33,34,34,35,35,36,36,37,37,38,38,39,39,40,40,41

%N n appears A055642(n) times (appearances equal number of decimal digits).

%C Lexicographically smallest nondecreasing left inverse to A117804: a(A117804(n)) = n. Gives the number to which belongs the digit A007376(n). - _M. F. Hasler_, Oct 23 2019

%Y Cf. A055642, A030530 (n's appearances equal its number of bits).

%K base,easy,nonn

%O 0,3

%A _Rick L. Shepherd_, Nov 21 2004