%I
%S 1,6,8,14,7,6,13,16,6,7,5,0,3,8,6,13,16,6,7,7,15,11,7,6,13,16,6,7,9,
%T 1,9,15,6,13,16,6,7,12,1,10,4,6,13,16,6,7,9,1,2,4,6,13,16,6,7,5,1,20,
%U 13,1,13,16,6,7,4,1,12,2,5,3,16,6,7,10,1,3,11,15,6,13,6,7,19,1,14,6,2,7,5,9,7,9,1,12,4,5
%N For each n, define a sequence of numbers by S(0)=n, S(i) = sum of last three digits of the concatenation S(0)S(1)S(2)...S(i1); a(n) = smallest m such that S(m) = 11, or 1 if 11 is never reached.
%D Eric Angelini, Posting to Math Fun Mailing List, Mar 11 2012.
%e 3>3>6>12>9>12>12>5>8>15>14>10>5>6>11, so a(3)=14.
%e 59>14>14>9>14>14>9>... never reaches 11, so a(59)=1.
%Y Cf. A209674.
%K sign,base
%O 0,2
%A _N. J. A. Sloane_, Mar 11 2012
