320045

Appears in sequences

• a(n) is the smallest number k such that the symmetric representation of sigma(k) has n parts.at n=14A239663
• a(n) = Product_{d|n, d>1} prime(1+(d mod 12)).at n=31A320112
• Triangle read by rows: T(n,k) is the number of steps in constructing a tree f(n,k) where f(a,b) = f(f(a-1,b), f(a,b-1)), f(0,b) = f(b-1,b-1), f(a,0) = f(a-1,a-1), f(0,0) = 0; n >= 0, k = 0..n.at n=37A369792