Number of preferential arrangements of n labeled elements when at least k=7 elements per rank are required.

A245792

Number of preferential arrangements of n labeled elements when at least k=7 elements per rank are required.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =1a(13) =1a(14) =3433a(15) =12871a(16) =35751a(17) =87517a(18) =199785a(19) =436697a(20) =927657a(21) =401005793a(22) =3296326113a(23) =17887397621a(24) =80157730101a(25) =321127444171

External references