Number of binary words of length n with exactly twice as many occurrences of subword 101 as occurrences of subword 010.
A303430
Number of binary words of length n with exactly twice as many occurrences of subword 101 as occurrences of subword 010.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =6a(4) =10a(5) =17a(6) =28a(7) =49a(8) =84a(9) =148a(10) =263a(11) =472a(12) =858a(13) =1568a(14) =2893a(15) =5372a(16) =10034a(17) =18824a(18) =35428a(19) =66898a(20) =126683a(21) =240483a(22) =457334a(23) =870956a(24) =1660850a(25) =3171112a(26) =6061596a(27) =11597587a(28) =22206775a(29) =42551339
External references
- oeis: A303430