Convolution square of A255528.

Terms

a(0) =1a(1) =-2a(2) =-1a(3) =-2a(4) =7a(5) =2a(6) =10a(7) =-8a(8) =5a(9) =-40a(10) =-4a(11) =-54a(12) =52a(13) =-30a(14) =162a(15) =-12a(16) =292a(17) =-142a(18) =270a(19) =-576a(20) =168a(21) =-1228a(22) =305a(23) =-1702a(24) =1435a(25) =-1664a(26) =3839a(27) =-1444a(28) =7303a(29) =-2752