Take n-th string over {1,2} in lexicographic order and apply the Post tag system described in A284116 (but adapted to the alphabet {1,2}) just once.

A289673

Take n-th string over {1,2} in lexicographic order and apply the Post tag system described in A284116 (but adapted to the alphabet {1,2}) just once.

Terms

    a(0) =-1a(1) =12a(2) =1a(3) =1a(4) =212a(5) =212a(6) =11a(7) =11a(8) =11a(9) =11a(10) =2212a(11) =2212a(12) =2212a(13) =2212a(14) =111a(15) =211a(16) =111a(17) =211a(18) =111a(19) =211a(20) =111a(21) =211a(22) =12212a(23) =22212a(24) =12212a(25) =22212a(26) =12212a(27) =22212a(28) =12212a(29) =22212

External references