33762

Appears in sequences

• Number of squares in the interior of the square with vertices (n,0), (0,n), (-n,0) and (0,-n) in a square (x,y)-grid.at n=36A111746
• A generalized Catalan number sequence.at n=22A174015
• a(n) is the number of column convex polyglasses (polyiamonds which need only touch at corners) with n cells.at n=5A319326
• Number of integer partitions of n whose negated run-lengths are not unimodal.at n=43A332639
• a(n) = Sum_{k=1..n} binomial(n,k) * sigma_2(k).at n=9A356038
• a(n) is the total number of paths starting at (0, 0), ending at (n, 0), consisting of steps (1, 1), (1, 0), (1, -3), and staying on or above y = -1.at n=14A379463