Trisection 0 of A199744.

Terms

a(0) =1a(1) =1a(2) =-4a(3) =0a(4) =20a(5) =-25a(6) =-71a(7) =216a(8) =94a(9) =-1220a(10) =1037a(11) =4941a(12) =-11440a(13) =-11008a(14) =72112a(15) =-33453a(16) =-326675a(17) =577060a(18) =950750a(19) =-4129272a(20) =279257a(21) =20740793a(22) =-27217100a(23) =-72078336a(24) =228625372a(25) =83808415a(26) =-1271796511a(27) =1153458144a(28) =5060707454a(29) =-12183603100