Diagonal sums of number triangle A105522.

Terms

a(0) =1a(1) =-2a(2) =2a(3) =0a(4) =-1a(5) =-2a(6) =4a(7) =4a(8) =-10a(9) =-12a(10) =30a(11) =36a(12) =-93a(13) =-114a(14) =300a(15) =372a(16) =-994a(17) =-1244a(18) =3364a(19) =4240a(20) =-11578a(21) =-14676a(22) =40400a(23) =51448a(24) =-142592a(25) =-182288a(26) =508166a(27) =651756a(28) =-1826037a(29) =-2348562