Generalized Stirling2 array (8,2).

Terms

a(0) =1a(1) =56a(2) =16a(3) =1a(4) =10192a(5) =4928a(6) =776a(7) =48a(8) =1a(9) =3872960a(10) =2477440a(11) =575680a(12) =63360a(13) =3536a(14) =96a(15) =1a(16) =2517424000a(17) =1940556800a(18) =572868800a(19) =86163840a(20) =7326880a(21) =364800a(22) =10480a(23) =160a(24) =1a(27) =773352966400a(28) =143430604800a(29) =15836206400a(30) =1099612800a(31) =49056960