Number of step cyclic shifted sequences using a maximum of five different symbols.

A056413

Number of step cyclic shifted sequences using a maximum of five different symbols.

Terms

    a(0) =5a(1) =15a(2) =35a(3) =120a(4) =201a(5) =1505a(6) =2015a(7) =14070a(8) =37085a(9) =246753a(10) =445515a(11) =5205790a(12) =7832185a(13) =72703645a(14) =254689657a(15) =1196213445a(16) =2805046965a(17) =35322811755a(18) =55770979195a(19) =596439735024

External references