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%I #3 Mar 30 2012 17:33:54
%S 0,1,1,1,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,
%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N n-th run has length n-th positive triangular number, with digits 0 and 1 only, starting with 0.
%e .n ..... Run ............................... Length
%e .1 ..... 0 ................................. 1
%e .2 ..... 1,1,1 ............................. 3
%e .3 ..... 0,0,0,0,0,0........................ 6
%e .4 ..... 1,1,1,1,1,1,1,1,1,1 ............... 10
%e .5 ..... 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ..... 15
%Y Cf. A000217, A057212, A138150, A138710.
%K easy,nonn
%O 1,1
%A _Omar E. Pol_, Mar 29 2008
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