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A102234 Slowest increasing sequence such that no digit "d" has a copy of itself at "d" digits, left or right. 0

%I

%S 1,2,3,4,5,6,7,8,9,12,13,14,15,16,17,18,19,21,31,32,34,35,36,37,38,39,

%T 41,42,51,52,53,54,56,57,58,59,61,62,63,71,72,73,74,75,76,78,79,81,82,

%U 83,84,121,312,412

%N Slowest increasing sequence such that no digit "d" has a copy of itself at "d" digits, left or right.

%e Take integer [78] in the sequence for instance : ...73 74 75 76 [78] 79 81 82 83...

%e The digit "7", jumping 7 digits back, ends on "3" [73] which is not "7"; jumping 7 digits to the right ends on "2" which, again, is not a "7". The same can be said for "8" (left -> "7"; right -> "3")

%Y Cf. A102150.

%K base,easy,nonn

%O 1,2

%A _Eric Angelini_, Feb 18 2005

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Last modified June 17 19:10 EDT 2019. Contains 324198 sequences. (Running on oeis4.)