Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 7.

A245860

Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 7.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =3432a(8) =12870a(9) =22880a(10) =38896a(11) =63648a(12) =100776a(13) =155040a(14) =399305520a(15) =3292693008a(16) =17879790324a(17) =70676513424a(18) =242216077400a(19) =762341522800

External references