Triangle read by rows: the negative terms of A163626.

Terms

a(0) =-1a(1) =-3a(2) =-7a(3) =-6a(4) =-15a(5) =-60a(6) =-31a(7) =-390a(8) =-120a(9) =-63a(10) =-2100a(11) =-2520a(12) =-127a(13) =-10206a(14) =-31920a(15) =-5040a(16) =-255a(17) =-46620a(18) =-317520a(19) =-181440a(20) =-511a(21) =-204630a(22) =-2739240a(23) =-3780000a(24) =-362880a(25) =-1023a(26) =-874500a(27) =-21538440a(28) =-59875200a(29) =-19958400