Generalized Stirling number triangle of first kind.

Terms

a(0) =1a(1) =-5a(2) =1a(3) =30a(4) =-11a(5) =1a(6) =-210a(7) =107a(8) =-18a(9) =1a(10) =1680a(11) =-1066a(12) =251a(13) =-26a(14) =1a(15) =-15120a(16) =11274a(17) =-3325a(18) =485a(19) =-35a(20) =1a(21) =151200a(22) =-127860a(23) =44524a(24) =-8175a(25) =835a(26) =-45a(27) =1a(28) =-1663200a(29) =1557660