131495

Appears in sequences

• a(n) = (1/12)*(n+5)*(n+1)*n^2.at n=34A014205
• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Fibonacci numbers), t = A001950 (upper Wythoff sequence).at n=32A025085
• Convolution of Jacobsthal(n) and 3^n.at n=11A094705
• a(n) = n*(n+1)*(20*n-17)/6.at n=34A172117