Number of (binary) bit strings in which no even length block of 0's is followed by an even length block of 1's.

A065494

Number of (binary) bit strings in which no even length block of 0's is followed by an even length block of 1's.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =15a(5) =30a(6) =57a(7) =112a(8) =216a(9) =420a(10) =815a(11) =1580a(12) =3069a(13) =5950a(14) =11552a(15) =22408a(16) =43487a(17) =84378a(18) =163725a(19) =317700a(20) =616444a(21) =1196172a(22) =2321007a(23) =4503704a(24) =8738921a(25) =16956954a(26) =32903164a(27) =63845000a(28) =123884479a(29) =240384374

External references