Length of n-th run of digit 1 in A003137.

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =1a(5) =1a(6) =2a(7) =2a(8) =5a(9) =1a(10) =1a(11) =2a(12) =1a(13) =1a(14) =2a(15) =1a(16) =1a(17) =1a(18) =1a(19) =2a(20) =1a(21) =1a(22) =1a(23) =3a(24) =1a(25) =1a(26) =1a(27) =2a(28) =2a(29) =2