Signed triangle used to compute column sequences of array A078741 ((3,3)-Stirling2).

Terms

a(0) =1a(1) =-1a(2) =4a(3) =1a(4) =-8a(5) =10a(6) =-1a(7) =12a(8) =-30a(9) =20a(10) =1a(11) =-64a(12) =600a(13) =-1600a(14) =1225a(15) =-1a(16) =80a(17) =-1000a(18) =4000a(19) =-6125a(20) =3136a(21) =1a(22) =-96a(23) =1500a(24) =-8000a(25) =18375a(26) =-18816a(27) =7056a(28) =-1a(29) =448