44209

Appears in sequences

• INVERT transform of A008805 (triangular numbers repeated).at n=12A178320
• Number of n-bead necklaces labeled with numbers -6..6 not allowing reversal, with sum zero and first differences in -6..6.at n=6A208991
• Number of 7-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and first differences in -n..n.at n=5A208998
• a(n) = Sum_{-n<i<n, -n<j<n, gcd{i,j}=2} (n-|i|)*(n-|j|)/8.at n=38A331773
• Number of Hamiltonian paths from NW to SW corners in an n X n grid reduced for symmetry, i.e., where reflection about the x-axis is not counted as distinct.at n=6A384173