134820

Appears in sequences

• Smallest number k such that prime(n) is the n-th divisor of k.at n=26A221647
• Expansion of Product_{k>=1} (1 + x^(k*(k+1)/2))^(k*(k+1)/2).at n=50A298850
• G.f. A(x) satisfies A(x) = 1 + x / (1 - x*A(x)^2)^4.at n=8A378733