127853

Appears in sequences

• Number of Raspail perfect graphs on n nodes.at n=8A123452
• a(n) = ((5 + 2*sqrt(2))*(3 + sqrt(2))^n + (5 - 2*sqrt(2))*(3 - sqrt(2))^n)/2.at n=7A163609
• Expansion of Product_{k>0} (1 - k^2*x^k)^(1/k).at n=23A294620