Number of primitive (aperiodic) step shifted (decimated) sequence structures using exactly five different symbols.

A056409

Number of primitive (aperiodic) step shifted (decimated) sequence structures using exactly five different symbols.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =9a(6) =26a(7) =299a(8) =1183a(9) =10700a(10) =24736a(11) =349232a(12) =626053a(13) =6680953a(14) =26364609a(15) =137246955a(16) =353304459a(17) =4826416835a(18) =8199440662a(19) =93679518802a(20) =315943737305

External references