29981

Appears in sequences

• Number of Twopins positions.at n=52A005686
• Sum of first n terms of A_n (using absolute values of terms).at n=38A039928
• Antidiagonal sums of the triangle A099557.at n=25A099558
• Cumulative sum of absolute values of coefficients of q^(2n) in the series expansion of Ramanujan's mock theta function f(q).at n=38A109471
• Positions in A181391 where the terms listed in A171863 appear.at n=24A171864
• The total number of different isosceles trapezoids, excluding squares, that can be drawn on an n X n square grid where the corners of each individual trapezoid lie on a lattice point.at n=41A272459