Number triangle read by rows, related to exp(x)/(cos(x) + sin(x)).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =3a(4) =-2a(5) =1a(6) =-11a(7) =9a(8) =-3a(9) =1a(10) =57a(11) =-44a(12) =18a(13) =-4a(14) =1a(15) =-361a(16) =285a(17) =-110a(18) =30a(19) =-5a(20) =1a(21) =2763a(22) =-2166a(23) =855a(24) =-220a(25) =45a(26) =-6a(27) =1a(28) =-24611a(29) =19341