Number of binary words of length n with exactly 2 (possibly overlapping) occurrences of the subword given by the binary expansion of n.

A236231

Number of binary words of length n with exactly 2 (possibly overlapping) occurrences of the subword given by the binary expansion of n.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =1a(7) =13a(8) =1a(9) =18a(10) =68a(11) =142a(12) =237a(13) =862a(14) =1672a(15) =3188a(16) =1768a(17) =6078a(18) =16090a(19) =32566a(20) =62214a(21) =181695a(22) =380903a(23) =802572a(24) =1634880a(25) =3784693a(26) =7871112a(27) =17020646a(28) =36800640a(29) =78582498

External references