41768

Appears in sequences

• Series expansion for mean-squared radius of gyration of convex polygons on square lattice.at n=5A121777
• Triangle read by rows: expansion of Sum_{k=0..n} binomial(n, k)*(Product_{j=0..n-k+1} (x + i)) * (-1)^k * x^(k-1).at n=24A174789
• Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.at n=9A252143
• a(n) = number of new distinct proper angles with vertex and legs on grid points in an n X n square grid that were not found in an (n-1) X (n-1) square grid.at n=40A252592
• p-INVERT of (1,1,0,0,0,0,...), where p(S) = (1 - S^2)(1 - S)^2.at n=14A291409
• Numbers k such that sopfr(k) = tau(k)^2.at n=27A305026
• Triangle T(n,c) counting Motzkin Paths of length n with c sections starting with an up-step at level 0.at n=51A348869
• Brent's irregular triangle T[r,k] related to Hardy-Littlewood constants of prime gaps 2r.at n=62A381083
• Numbers k such that k^2, (k+1)^2 and (k+2)^2 are all abundant numbers.at n=14A383391