97650

Appears in sequences

• a(n) = ((n^3 - 4n + 1)*A000166(n) + (-1)^(n+1)*(n-1)^2) / 6.at n=7A105928
• a(n) = 25*(5^n - 1)/4.at n=6A168571
• Averages of twin prime pairs of the form : sum of two or more consecutive squares.at n=27A174716
• Triangle read by rows: T(n, k) = Sum_{t=k..n-3} (-1)^(t-k)*(n-t)!*binomial(t,k)*binomial(n-3,t).at n=31A264028
• Triangle read by rows: Column k has e.g.f. t^k / ((1 - t)^(k + 1) * exp(t)).at n=31A372723
• a(n) = denominator of Sum_{i=1..n} 1/A031216(i).at n=9A375526