138890

Appears in sequences

• Expansion of (1+x*C)*C^4, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.at n=9A070857
• Numbers n such that sum of distinct primes dividing n is divisible by the largest prime dividing n. Also n has exactly 5 distinct prime factors and n is squarefree.at n=35A071144
• Triangle read by rows: T(n,k) is the number of Dyck n-paths containing k even-length descents to ground level.at n=51A111301