Row sums of triangle A104505, which is equal to the right-hand side of the triangle A084610 of coefficients in (1+x-x^2)^n.

A104507

Row sums of triangle A104505, which is equal to the right-hand side of the triangle A084610 of coefficients in (1+x-x^2)^n.

Terms

    a(0) =1a(1) =0a(2) =-2a(3) =-3a(4) =2a(5) =15a(6) =19a(7) =-28a(8) =-134a(9) =-129a(10) =353a(11) =1254a(12) =791a(13) =-4238a(14) =-11818a(15) =-3123a(16) =49162a(17) =110007a(18) =-17783a(19) =-554458a(20) =-996323a(21) =690932a(22) =6096792a(23) =8624747a(24) =-12287153a(25) =-65419110a(26) =-69285296a(27) =178655307a(28) =684550946a(29) =483569751

External references