a(n) = number of 1's between n-th 2 and (n+1)st 2 in A026600.

Terms

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