27459

Appears in sequences

• a(n) = (1 - 2*cos(Pi/9))^n + (1 + 2*cos(Pi*2/9))^n + (1 + 2*cos(Pi*4/9))^n.at n=10A062882
• Maximum number of points visible from some point in a cubic n x n x n lattice.at n=31A141227
• a(n) = n^2*(n^2 + 15)/4.at n=18A159833
• Number of partitions of 0 of the form [x(1)+x(2)+...+x (j)] - [y(1)+y(2)+...+y(k)] where the x(i) are distinct positive integers <=n and the y(i) are distinct positive integers <= n.at n=21A209535
• Terms of A046337 for which A358777 is zero, where the latter is the Dirichlet inverse of former's characteristic function.at n=41A359607