418128

Appears in sequences

• a(n) = A027170(2n, n).at n=9A027171
• a(n) = A027170(n, floor(n/2)).at n=18A027177
• Expansion of Product_{i>=1, j>=1, k>=1} (1 + i*j*k*x^(i*j*k)).at n=15A318482