4556250

Appears in sequences

• Triangle whose (n,k)-th entry is 15^(n-k)*binomial(n,k).at n=22A027467
• a(n) = (n-1) * 15^(n-2).at n=5A027475
• Triangle read by rows: T(n, k) = binomial(n+k, n-k)/(2*k + 1) * (2*n + 1)^k.at n=33A370262