A343215 - OEIS

%I #17 Apr 16 2021 00:17:58

%S 1,1,1,1,1,1,1,1,1,1,9,2,8,3,7,4,6,5,5,6,4,7,3,8,2,9,1,1,9,1,89,2,18,

%T 2,78,3,27,3,67,4,36,4,56,5,45,5,45,6,54,6,34,7,63,7,23,8,72,8,12,9,

%U 81,9,1,1,9,1,89,1,9,1,889,2,18,2,178,2,18,2,778

%N Differences between consecutive numbers with unique nonzero digit in decimal representation.

%F a(n) = A125289(n+1) - A125289(n).

%Y First differences of A125289.

%K nonn,base

%O 1,11

%A _Guillermo Miñones Collantes_, Apr 08 2021