Array used for numerators of g.f.s for column sequences of array A090214 ((4,4)-Stirling2).

A090221

Array used for numerators of g.f.s for column sequences of array A090214 ((4,4)-Stirling2).

Terms

    a(0) =1a(1) =96a(2) =72a(3) =14400a(4) =16a(5) =38400a(6) =3456000a(7) =1a(8) =27000a(9) =22104000a(10) =1270080000a(11) =7200a(12) =34905600a(13) =16111872000a(14) =682795008000a(15) =856a(16) =21154176a(17) =48248363520a(20) =48a(21) =6064128a(22) =54644474880

External references