%I #5 Oct 09 2013 14:20:19
%S 1,11,12,21,100,101,102,111,112,121,122,131,132,141,142,151,152,161,
%T 162,171,172,181,182,191,192,201,1000,1001,1002,1011,1012,1021,1022,
%U 1031,1032,1041,1042,1051,1052,1061,1062,1071,1072,1081,1082,1091,1092,1101
%N Slowest increasing sequence of integers that alternately begin and end with 1.
%K base,easy,nonn
%O 1,2
%A _Eric Angelini_, Oct 01 2004
%E More terms from _Sam Alexander_, Jan 04 2005
%E More terms from _Max Alekseyev_, Jan 31 2010