36415

Appears in sequences

• Triangular matrix T, read by rows, that satisfies: [T^-1](n,k) = -k^2*T(n-2,k) when (n-2)>=k>=0, with T(n,n) = 1 and T(n+1,n) = (2*n+1) for n>=0.at n=40A106210
• G.f. A(x) satisfies A(x) = 1/(1 - x*A(2*x)^7).at n=4A171197
• Number of tilings of a 3 X n rectangle using straight (3 X 1) trominoes and 2 X 2 tiles.at n=23A219968