115287

Appears in sequences

• An approximation to population of x^2 + y^2 <= 2^n.at n=19A000692
• Triangle, read by rows, such that the diagonal (A084785) is the self-convolution of the first column (A084784) and the row sums (A084786) gives the differences of the diagonal and the first column.at n=40A084783
• a(n) = 27225*n^2 - 51302*n + 24168.at n=2A157802