a(n) = total number of binary sequences S of length n and curling number k (so S = XY^k) in which Y can be taken to have length 1.

A217932

a(n) = total number of binary sequences S of length n and curling number k (so S = XY^k) in which Y can be taken to have length 1.

Terms

    a(0) =2a(1) =4a(2) =8a(3) =14a(4) =28a(5) =52a(6) =104a(7) =202a(8) =402a(9) =794a(10) =1588a(11) =3152a(12) =6304a(13) =12572a(14) =25136a(15) =50198a(16) =100396a(17) =200636a(18) =401272a(19) =802260a(20) =1604488a(21) =3208416a(22) =6416832a(23) =12832482a(24) =25664962a(25) =51327702a(26) =102655278a(27) =205306104a(28) =410612208a(29) =821215304

External references