220200960

Appears in sequences

• a(n) = binomial(n,2) * 2^(n-1).at n=21A001815
• Denominator of I(n)=integral_{x=0 to 1/n}(x^2-1)^3 dx.at n=7A094075
• Consider the Post tag system defined in A284116; a(n) = number of binary words of length n which terminate at the empty word.at n=29A289670
• a(n) = (n + 1)^(n - 1) * lcm{k + 1 : 0 <= k <= n}. Main diagonal of triangle A362995.at n=7A362992
• Triangle read by rows. T(n, k) = [x^k] lcm({i + 1 : 0 <= i <= n}) * (Sum_{u=0..k} ( Sum_{j=0..u} x^j * binomial(u, j) * (j + 1)^n ) / (u + 1)).at n=35A362995