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%I #8 Mar 03 2015 21:59:19
%S 5,4,5,2,3,3,1,5,4,1,6,4,5,2,3,3,1,5,4,1,7,4,5,2,3,3,1,5,4,1,4,4,5,2,
%T 3,3,1,5,4,1,5,4,5,2,3,3,1,5,4,1,5,4,5,2,3,3,1,5,4,1,5,4,5,2,3,3,1,5,
%U 4,1,6,4,5,2,3,3,1,5,4,1,7,4,5,2,3,3,1,5,4,1,4,4,5,2,3,3,1,5,4,1,5,4,5,2,3,3,1,5,4,1,5,4,5,2,3,3,1,5,4,1
%N Number of bars that must change on a standard digital clock when the minutes change from n-1 to n.
%C Cyclic with period 60.
%e a(20)=7 because when the clock changes from 19 to 20 minutes, 1 bar turns off and 4 bars turn on in the tens digit for the "0" to become a "1" and 1 bar turns off and 1 turns on in the units digit for the "9" to become a "0". 1 + 4 + 1 + 1 = 7.
%Y Cf. A006942, A010371, A063720.
%K easy,nonn,base,dumb
%O 0,1
%A _Danny Rorabaugh_, Nov 13 2006
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