Number of length-n binary sequences where the sum of each subblock differs by at most 2 from every other subblock of the same length.

A274005

Number of length-n binary sequences where the sum of each subblock differs by at most 2 from every other subblock of the same length.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =32a(6) =62a(7) =120a(8) =222a(9) =410a(10) =728a(11) =1294a(12) =2220a(13) =3816a(14) =6380a(15) =10690a(16) =17486a(17) =28704a(18) =46180a(19) =74464a(20) =118226a(21) =188158a(22) =295062a(23) =464146a(24) =721500a(25) =1123384a(26) =1731646a(27) =2676538a(28) =4094776a(29) =6279380

External references