Maximum cycle length in differentiation digraph for n-bit binary sequences.

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =15a(5) =6a(6) =7a(7) =1a(8) =63a(9) =30a(10) =341a(11) =12a(12) =819a(13) =14a(14) =15a(15) =1a(16) =255a(17) =126a(18) =9709a(19) =60a(20) =63a(21) =682a(22) =2047a(23) =24a(24) =25575a(25) =1638a(26) =13797a(27) =28a(28) =475107a(29) =30