79920

Appears in sequences

• Expansion of (x+2) / ((x+1)*(x^2-3*x+1)).at n=11A102714
• a(n) = 4*a(n-1) - 2*a(n-2) for n > 1; a(0) = 3, a(1) = 14.at n=8A164304
• Triangle read by rows: T(n,k) = binomial(n,k)*(binomial(n-1,k-1)*binomial(n+1,k+1) + binomial(n-1,k)*binomial(n+1,k)), with T(0,0) = 1.at n=47A174148
• Triangle read by rows: T(n,k) = binomial(n,k)*(binomial(n-1,k-1)*binomial(n+1,k+1) + binomial(n-1,k)*binomial(n+1,k)), with T(0,0) = 1.at n=52A174148
• A generalized Narayana triangle for sec(x)^2.at n=58A180960
• A generalized Narayana triangle for sec(x)^2.at n=62A180960
• Numbers with prime factorization pqr^3s^4.at n=26A190294
• Number of inequivalent (mod D_4) ways four checkers can be placed on an n X n board.at n=6A242279
• Number of length n 0..1 arrays with each partial sum starting from the beginning no more than one standard deviation from its mean.at n=18A244781
• Numbers k such that k = Product (p_j^e_j) = Product (pi(p_j)*p_j), where pi() = A000720.at n=34A304194
• Triangle, read by rows, where the n-th row lists the (n^2+1) coefficients of (1+2*x+...+(n+1)*x^n)^n.at n=58A329709
• a(n) = (n - 1) * (n - 2) * sigma(n).at n=37A374915