42602

Appears in sequences

• Maximal length of rook tour on an n X n board.at n=39A006071
• Number of loopless rooted planar maps with 5 faces and n vertices and no isthmuses.at n=5A006418
• Numbers k such that 8^k == -1 (mod k-1).at n=16A055691
• Numbers k such that 10^k + 11131719 is prime.at n=12A120300
• G.f.: -2*(-2 - 11*x - 4*x^2 + x^3)/(x - 1)^4.at n=19A152110
• Maximal length of rook tour on an n X n+2 board.at n=38A152133
• G.f.: 1 / Product_{i>=1} (1-q^(2*i-1))^2*(1-q^(12*i-8))*(1-q^(12*i-6))*(1-q^(12*i-4))*(1-q^(12*i)).at n=30A201077
• Triangle read by rows: T(n,k) is the number of rooted loopless planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.at n=59A342980
• Triangle read by rows: T(n,k) is the number of rooted loopless planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.at n=61A342980
• Triangle read by rows: numerators of the almost-Riordan array ( (-6*x - 3 - 3*sqrt(12*x^2 - 8*x + 1))/(8*x^2 - 3*x - 3 + (3*x - 3)*sqrt(12*x^2 - 8*x + 1)) | 6/(3*(1 - x)*sqrt(12*x^2 - 8*x + 1) - 8*x^2 + 3*x + 3), (1 - 4*x - sqrt(12*x^2 - 8*x + 1))/(2*x) ).at n=49A389739