Lower triangular array called S2hat(-4) related to partition number array A144284.

Terms

a(0) =1a(1) =4a(2) =1a(3) =36a(4) =4a(5) =1a(6) =504a(7) =52a(8) =4a(9) =1a(10) =9576a(11) =648a(12) =52a(13) =4a(14) =1a(15) =229824a(16) =12888a(17) =712a(18) =52a(19) =4a(20) =1a(21) =6664896a(22) =286272a(23) =13464a(24) =712a(25) =52a(26) =4a(27) =1a(28) =226606464a(29) =8182944