198310460

Appears in sequences

• Reversion of Pell numbers A000129(n+1).at n=23A104565
• G.f. A(x) satisfies: A(x)^2 + A(-x)^2 = 2 and A(x)^-2 - A(-x)^-2 = -8*x.at n=12A193618
• G.f.: sqrt( (1 + sqrt(1+8*x)) / (1 + sqrt(1-8*x)) ).at n=12A246062