Number of length n binary palindromic words which are not all zero in which 1's occur in blocks of at least 4.

A386709

Number of length n binary palindromic words which are not all zero in which 1's occur in blocks of at least 4.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =2a(6) =2a(7) =3a(8) =4a(9) =5a(10) =7a(11) =8a(12) =11a(13) =13a(14) =17a(15) =21a(16) =26a(17) =33a(18) =40a(19) =51a(20) =62a(21) =78a(22) =96a(23) =119a(24) =148a(25) =182a(26) =227a(27) =279a(28) =347a(29) =428

External references