G.f. A(x) satisfies: A(x) = x + x^2 * A(x/(1 - 4*x)) / (1 - 4*x).
A351128
G.f. A(x) satisfies: A(x) = x + x^2 * A(x/(1 - 4*x)) / (1 - 4*x).
Terms
- a(0) =0a(1) =1a(2) =0a(3) =1a(4) =8a(5) =49a(6) =280a(7) =1649a(8) =10800a(9) =81505a(10) =696400a(11) =6472033a(12) =63562872a(13) =652984977a(14) =7026210728a(15) =79547049681a(16) =949709767904
External references
- oeis: A351128