Triangle read by rows. The triangle algorithm applied to (-1)^n/n!.

Terms

a(0) =1a(1) =-2a(2) =1a(3) =5a(4) =-4a(5) =1a(6) =-15a(7) =15a(8) =-6a(9) =1a(10) =52a(11) =-60a(12) =30a(13) =-8a(14) =1a(15) =-203a(16) =260a(17) =-150a(18) =50a(19) =-10a(20) =1a(21) =877a(22) =-1218a(23) =780a(24) =-300a(25) =75a(26) =-12a(27) =1a(28) =-4140a(29) =6139