Triangle read by rows: A000012 * A128315 as infinite lower triangular matrices.

Terms

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