210975

Appears in sequences

• Rhombic dodecahedral numbers: a(n) = n^4 - (n - 1)^4.at n=37A005917
• G.f. A(x) satisfies: x = Sum_{n>=1} (-1)^(n-1) * x^(2*n-1)*A(x) / (1 + x^(2*n-1)*A(x)).at n=19A303059