1455300

Appears in sequences

• a(n) = A029571(n) / 6.at n=11A029587
• Integers that can be expressed as a product of triangular numbers in 3 different ways.at n=18A110904
• Triangle read by rows, T(n,k) = Sum_{j=k..n} A269940(n,j)*A269939(j,k), for n>=0 and 0<=k<=n.at n=19A269957
• Triangle read by rows: T(n,k) is the number of edge covers of the complete labeled graph on n nodes that are minimal and have exactly k edges, n>=2, 1<=k<=n-1.at n=61A281269
• a(n) = Product_{d|n, d<n} A019565(d)^[0 == d mod 3].at n=35A319990
• a(n) = Product_{d|n} A019565(phi(d)), where phi is Euler totient function A000010.at n=47A332824
• A005117(k) - 1 such that A389412(k) is a record value.at n=9A387630