227205

Appears in sequences

• 3rd-order Patalan numbers (generalization of Catalan numbers).at n=8A025748
• A convolution triangle of numbers obtained from A025748.at n=28A048966
• G.f. A(x) satisfies A057083(x*A(x)) = A(x) and so equals the ratio of the g.f.s of any two adjacent diagonals of triangle A097186.at n=7A097188
• a(n) = smallest k having at least four prime divisors d such that (d + n) | (k + n).at n=34A202159
• Numbers k such that A360327(k) > 2*k.at n=21A360328