Triangle T(n,k) read by rows: see formula lines for definition.

Terms

a(0) =1a(1) =-1a(2) =6a(3) =2a(4) =-10a(5) =10a(6) =-17a(7) =84a(8) =-70a(9) =28a(10) =124a(11) =-612a(12) =504a(13) =-168a(14) =36a(15) =-2764a(16) =13640a(17) =-11220a(18) =3696a(19) =-660a(20) =88a(21) =43688a(22) =-215592a(23) =177320a(24) =-58344a(25) =10296a(26) =-1144a(27) =104a(28) =-1859138a(29) =9174480