68774

Appears in sequences

• Expansion of (1 - x^2 - 2*x^3) / (1 - 2*x - 2*x^2 - 2*x^3 + x^4).at n=11A038989
• Number of compositions of n into distinct parts with exactly seven descents.at n=19A241726
• Triangle read by rows: T(n,k) is the number of unlabeled simple graphs with n vertices and maximum vertex degree k, (0 <= k < n).at n=41A263293
• p-INVERT of (1,0,1,0,0,0,0,...), where p(S) = 1 - S - S^3.at n=18A291735
• Triangle read by rows: T(n,k) is the number of graphs with n vertices and minimum vertex degree k, (0 <= k < n).at n=39A294217