-2036

Appears in sequences

• Riordan array (1/(1+2x), x/(1+x)).at n=68A103316
• G.f.: Product_{i>=1} (1 - 2*(-x)^i)/(1 - (-x)^i)^2.at n=43A104510
• Inverse of a triangle of pyramidal numbers.at n=56A110814
• Riordan array T((1-x)^(-2) | 2x-1) read by rows.at n=45A181690
• Triangle T(n, k) = Sum_{j=0..k} (-1)^(k-j)*A159041(2*n+1, j), read by rows.at n=17A225483
• Triangle T(n, k) = Sum_{j=0..k} (-1)^(k-j)*A159041(2*n+1, j), read by rows.at n=23A225483
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+3)^k for 0 <= k <= n.at n=51A248811