Table read by rows: T(n, k) = A124320(n + 1, k) * A048993(n, k).

Terms

a(0) =1a(1) =0a(2) =2a(3) =0a(4) =3a(5) =12a(6) =0a(7) =4a(8) =60a(9) =120a(10) =0a(11) =5a(12) =210a(13) =1260a(14) =1680a(15) =0a(16) =6a(17) =630a(18) =8400a(19) =30240a(20) =30240a(21) =0a(22) =7a(23) =1736a(24) =45360a(25) =327600a(26) =831600a(27) =665280a(28) =0a(29) =8