31841

Appears in sequences

• Coefficients of power series generated by the continued fraction-like form: A(x) = 1/(1 - x/sqrt(1 - 4x/cube-root(1 - 9x/4th-root(1 - 16x/5th-root(1 - 25x/... /n-th-root(1 - (n^2)x/...)))))), where n-th-root(z)=z^(1/n).at n=6A075820
• Structured disdyakis dodecahedral numbers (vertex structure 7).at n=16A100162
• Number of n X 6 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.at n=7A224144
• Irregular triangle read by rows: T(n,k) is the number of n X n tic-tac-toe positions (up to rotation and reflection) with k tokens (i.e., after k plays) which allow a winning strategy for O (n > 0, 0 <= k <= n^2).at n=26A317574
• Number of subsets of {1..n} containing no products of two or more distinct elements.at n=17A326117
• Number of vertices formed in a square by straight line segments when connecting the four corner vertices to the points dividing the sides into n equal parts.at n=42A355949
• a(n) = Sum_{k=0..floor(n/3)} binomial(k+1,3*n-9*k+1).at n=53A392675