-40592

Appears in sequences

• A Somos-4 variant: a(n) = (36*a(n-1)*a(n-3) - 68*a(n-2)^2)/a(n-4).at n=4A162546
• G.f.: 1/(1 + x + 2*x^2 + 2*x^3 + x^4).at n=40A199744