[seqfan] The first digit of a(n) is the last digit of a(n+1).

[Eric Angelini]

Hello SeqFans,
the first digit of a(n) is the last one of a(n+1). Start the seq with a(1)=1 and extend it with the smallest integer not yet present and not leading to à contradiction.
S=1,11,21,2,12,31,3,13,41,4,14,51,5,15,61,6,16,71,7,17,81,8,18,91,9,19,101,111,121,131,141,151,151,161,171,181,191,201,22,32,23,42,24,...
I would love to see 10000-term graph: any taker?
Best,
É.

Catapulté de mon aPhone