157440

Appears in sequences

• Triangle of coefficients of polynomials (rising powers) useful for convolutions of A001333(n+1), n >= 0 (associated Pell numbers).at n=19A062133
• Least k such that prime(n)*(k^2) + prime(n)*k + 1 = m^2 = a square.at n=42A105263
• Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=5A207598
• Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=6A207603
• Numbers n such that phi(n) * tau(n) divides n^2, but neither tau(n) nor phi(n) divides n.at n=15A287800
• Table read by rows: T(n,k) = the number of regions with k sides, k >= 3, in a Farey diagram of order (n,n).at n=20A358885
• a(n) = (n - 1) * (n - 2) * sigma(n).at n=41A374915
• Expansion of 1/((1-x) * (1-2*x) * (1-3*x))^2.at n=7A383841
• Square array A(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of 1/Product_{j=0..k} (1 - j*x)^2.at n=62A383843