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%I #18 Mar 23 2023 18:29:06
%S 1,2,3,4,5,6,7,8,9,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,
%T 54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,
%U 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128
%N n times the number of digits in the decimal expansion of n.
%H Indranil Ghosh, <a href="/A110803/b110803.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) = n * A055642(n). - _Indranil Ghosh_, Jan 11 2017
%e a(1234) = 4936 = 1234*4.
%t # IntegerLength[#]&/@Range[60] (* _Harvey P. Dale_, Mar 04 2011 *)
%o (Python)
%o def A110803(n):
%o return n*len(str(n)) # _Indranil Ghosh_, Jan 11 2017
%Y Cf. A055642.
%K base,easy,nonn
%O 1,2
%A _Amarnath Murthy_, Aug 14 2005
%E Corrected by _T. D. Noe_, Oct 25 2006
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