Number of primitive (aperiodic) step shifted (decimated) sequence structures using a maximum of three different symbols.

A056402

Number of primitive (aperiodic) step shifted (decimated) sequence structures using a maximum of three different symbols.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =8a(4) =13a(5) =65a(6) =67a(7) =322a(8) =573a(9) =2495a(10) =2979a(11) =23294a(12) =22217a(13) =133081a(14) =300947a(15) =909050a(16) =1345633a(17) =10766559a(18) =10762819a(19) =72954582a(20) =145362861a(21) =523026545a(22) =713213955a(23) =5893685746a(24) =7060765719a(25) =35303760331

External references