40752

Appears in sequences

• Number of graphs with n nodes, n+2 edges and no isolated vertices.at n=7A006651
• Expansion of 1/(1+x^2-x^3+x^4).at n=50A129903
• a(n) = ((3+sqrt(2))*(2+sqrt(2))^n + (3-sqrt(2))*(2-sqrt(2))^n)/2.at n=8A161938
• Number of 5-step self-avoiding walks on an n X n square summed over all starting positions.at n=21A188150
• Numbers which are equal to the sum of the aliquot parts of the aliquot parts of their Euler totient function.at n=4A273593