Number of binary strings of length 2n which contain the ones' complement of each of their two halves.

A237500

Number of binary strings of length 2n which contain the ones' complement of each of their two halves.

Terms

    a(0) =2a(1) =6a(2) =12a(3) =28a(4) =58a(5) =118a(6) =244a(7) =500a(8) =1004a(9) =2024a(10) =4070a(11) =8150a(12) =16340a(13) =32720a(14) =65450a(15) =130986a(16) =262056a(17) =524136a(18) =1048422a(19) =2096982a(20) =4194000a(21) =8388300a(22) =16776906a(23) =33553866a(24) =67108266a(25) =134217126a(26) =268434342a(27) =536869782a(28) =1073740692a(29) =2147481432

External references