A114055 - OEIS

A114055

Self-describing sequence : runs of equal parity digits alternate ("0" is considered as an even digit); the length of each run is given by the sequence itself.

%I #2 Mar 31 2012 13:46:52

%S 1,2,4,5,7,9,10,20,22,31,33,35,36,40,42,44,46,51,53,55,57,59,60,62,64,

%T 66,68,80,82,84,86,88,91,93,95,97,99,111,113,117,200,202,204,206,208,

%U 220,222,224,226,228,231,311,313,315,317,319,331,333,335,337,339,340

%N Self-describing sequence : runs of equal parity digits alternate ("0" is considered as an even digit); the length of each run is given by the sequence itself.

%C A variant of A093848.

%e (1),(2,4),(5,7,9,1)(0,20,22),(31,33,35,3)(6,40,42,44,46),(51,53,55,57,59),(60,62,64,66,68,80,82,84,86,88)... Those runs of equal parity digits are of length 1,2,4,5,7,9,10,20... which is the sequence itself.

%K base,easy,nonn

%O 1,2

%A _Eric Angelini_, Feb 02 2006