Lower triangular array, called S1hat(-5), related to partition number array A145372.

Terms

a(0) =1a(1) =5a(2) =1a(3) =20a(4) =5a(5) =1a(6) =60a(7) =45a(8) =5a(9) =1a(10) =120a(11) =160a(12) =45a(13) =5a(14) =1a(15) =120a(16) =820a(17) =285a(18) =45a(19) =5a(20) =1a(21) =0a(22) =1920a(23) =1320a(24) =285a(25) =45a(26) =5a(27) =1a(28) =0a(29) =6600