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A118865 Start with 1 and repeatedly place the first digit at the end of the number and add 19. 0

%I

%S 1,20,21,31,32,42,43,53,54,64,65,75,76,86,87,97,98,108,100,20,21,31,

%T 32,42,43,53,54,64,65,75,76,86,87,97,98,108,100,20,21,31,32,42,43,53,

%U 54,64,65,75,76,86,87,97,98,108,100,20,21,31,32,42,43,53,54,64,65,75,76,86,87

%N Start with 1 and repeatedly place the first digit at the end of the number and add 19.

%C After 1 step the sequence enters a cycle of length 18.

%K base,nonn

%O 1,2

%A Luc Stevens (lms022(AT)yahoo.com), May 24 2006

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Last modified May 26 22:57 EDT 2019. Contains 323597 sequences. (Running on oeis4.)