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Both character strings a(n) and a(n+1) share the substring "n".
0

%I #5 Mar 31 2012 13:46:50

%S 0,10,12,23,34,45,56,67,78,89,109,110,112,1213,1314,1415,1516,1617,

%T 1718,1819,1920,2021,221,223,2324,2425,2526,2627,2728,2829,2930,3031,

%U 3132,332,334,3435,3536

%N Both character strings a(n) and a(n+1) share the substring "n".

%e If n = 10 then a(n) = 109 and a(n+1) = 110; "109" and "110" both show the substring "10" which is "n".

%K base,easy,nonn

%O 0,2

%A _Eric Angelini_, Oct 04 2004