148489

Appears in sequences

• Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=5, k=0 and l=1.at n=8A176609
• Number of scalene triangles, distinct up to congruence, on a centered hexagonal grid of size n.at n=19A241236