46390

Appears in sequences

• a(n) = 3*a(n-1) - 2*a(n-2) - a(n-3) + a(n-4), where a(1) = 1, a(2) = 3, a(3) = 5, a(4) = 8.at n=22A232896
• Number of circles in an n X n grid passing through at least three points.at n=9A355884