78416

Appears in sequences

• Number of series-parallel networks with n labeled edges. Also called yoke-chains by Cayley and MacMahon.at n=6A006351
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 35.at n=7A031713
• Triangle of series-parallel numbers.at n=34A036654
• Triangle of series-parallel numbers.at n=35A036654
• Numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^2 where w, x, y, and z are all positive integers.at n=29A057369
• Partial sums of A080180.at n=26A080181
• a(n) = 64*n^2 + 16.at n=34A157912
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=27A278458
• Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + 2*(k+1)!*Sum_{j=0..k} A(n-1,j)/j! with A(0,k) = 2*(k+1)!, n >= 0, k >= 0.at n=20A379459
• Array read by downward antidiagonals: A(n,k) = A(n,k-1) + (k+1)*(A(n-1,k) + A(n-1,k+1)) with A(n,0) = A(n-1,0) + A(n-1,1), A(0,k) = 1, n >= 0, k >= 0.at n=27A379460