45604

Appears in sequences

• Numbers of the form Bell(i)*Bell(j).at n=30A276281
• a(n) = Sum_{1 <= j <= n/2, gcd(j,n)=1} j^4.at n=29A295576
• G.f. A(x) satisfies: A(x) = 1 + x * A(x) / (1 + 3 * x * A(x)).at n=12A336729
• Expansion of Product_{j=1..n, k=1..n} (1 + x^(k^j)) / (1 - x^(k^j)).at n=7A361805