Triangle T(n,k) of number of minimal 5-covers of a labeled n-set that cover k points of that set uniquely (k=5,..,n).

A057966

Triangle T(n,k) of number of minimal 5-covers of a labeled n-set that cover k points of that set uniquely (k=5,..,n).

Terms

    a(0) =1a(1) =156a(2) =15a(3) =14196a(4) =2730a(5) =140a(6) =984256a(7) =283920a(8) =29120a(9) =1050a(10) =57578976a(11) =22145760a(12) =3407040a(13) =245700a(14) =6951a(15) =2994106752a(16) =1439474400a(17) =295276800a(18) =31941000a(19) =1807260a(20) =42525a(21) =142719088512a(22) =82337935680a(23) =21112291200a(24) =3045042000a(25) =258438180

External references