a(1) = 2, a(2) = 48; for n >= 1, a(n+2) = c(n)*a(n+1)^2/a(n) where c(n) = 256*(2*n+3)^2*(4*n+1)*(4*n+3)^2*(4*n+5) / (27*(3*n+1)*(3*n+2)^2*(3*n+4)^2*(3*n+5)).

A352207

a(1) = 2, a(2) = 48; for n >= 1, a(n+2) = c(n)*a(n+1)^2/a(n) where c(n) = 256*(2*n+3)^2*(4*n+1)*(4*n+3)^2*(4*n+5) / (27*(3*n+1)*(3*n+2)^2*(3*n+4)^2*(3*n+5)).