24930

Appears in sequences

• Expansion of a cusp form of weight 8 for Gamma_1(6).at n=14A006354
• Expansion of E.g.f. (1 + 2*x + x^2/2) * sech(x).at n=9A119883
• Number of ways to place 3 nonattacking kings on a 3 X n board.at n=19A172202
• Array T(n,k) read by antidiagonals, where T(0,k) = -A226158(k) and T(n+1,k) = 2*T(n,k+1) - T(n,k).at n=45A245683
• Number of positive solutions to x^2+y^2+z^2 <= n^2.at n=37A253663
• Number of 3Xn arrays containing n copies of 0..3-1 with no equal horizontal or vertical neighbors.at n=7A264955
• a(n) = Sum_{k=0..n-1} binomial(5*k,k) * binomial(5*n-5*k-2,n-k-1).at n=5A386367