Exponential Riordan array (1, sqrt(1+2x)-1).

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =-1a(5) =1a(6) =0a(7) =3a(8) =-3a(9) =1a(10) =0a(11) =-15a(12) =15a(13) =-6a(14) =1a(15) =0a(16) =105a(17) =-105a(18) =45a(19) =-10a(20) =1a(21) =0a(22) =-945a(23) =945a(24) =-420a(25) =105a(26) =-15a(27) =1a(28) =0a(29) =10395