The number of binary sequences that contain at least two consecutive 1's and contain at least two consecutive 0's.
A234933
The number of binary sequences that contain at least two consecutive 1's and contain at least two consecutive 0's.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =8a(6) =24a(7) =62a(8) =148a(9) =336a(10) =738a(11) =1584a(12) =3344a(13) =6974a(14) =14412a(15) =29576a(16) =60370a(17) =122712a(18) =248616a(19) =502398a(20) =1013156a(21) =2039840a(22) =4101570a(23) =8238560a(24) =16534432a(25) =33161598a(26) =66473244a(27) =133189272a(28) =266771378a(29) =534178376
External references
- oeis: A234933