a(n) = length of n-th run of identical symbols in A026498.

Terms

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