Square array read by antidiagonals downwards: super Patalan numbers of order 3.

Terms

a(0) =1a(1) =3a(2) =6a(3) =18a(4) =9a(5) =45a(6) =126a(7) =36a(8) =45a(9) =360a(10) =945a(11) =189a(12) =135a(13) =270a(14) =2970a(15) =7371a(16) =1134a(17) =567a(18) =648a(19) =1782a(20) =24948a(21) =58968a(22) =7371a(23) =2835a(24) =2268a(25) =3564a(26) =12474a(27) =212058a(28) =480168a(29) =50544