3010351

Appears in sequences

• a(n) = a(n-1) + a(n-2) - 2, a(0) = 4, a(1) = 3.at n=31A000211
• Number of maximum matchings in the n-Moebius ladder M_n.at n=31A020878
• Expansion of (1 - x + 3*x^3 - 2*x^4 - 3*x^5)/(1 - 2*x + x^3).at n=31A048162
• Inverse Moebius transform of A100107.at n=30A130878
• a(n) is the number of perfect matchings of an edge-labeled 2 X (2n+1) Mobius grid graph.at n=15A162483