Absolute 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.

A104508

Absolute 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) =2a(2) =4a(3) =9a(4) =20a(5) =47a(6) =103a(7) =198a(8) =512a(9) =1161a(10) =1985a(11) =5590a(12) =13005a(13) =21684a(14) =59294a(15) =142273a(16) =270858a(17) =634187a(18) =1526399a(19) =3256372a(20) =6779657a(21) =16020364a(22) =37758202a(23) =79702477a(24) =164647757a(25) =424655100a(26) =940639154a(27) =1709638551a(28) =4675803604a(29) =10774789429

External references