20874

Appears in sequences

• Number of directed rooted trees on n nodes with forbidden limbs.at n=7A014276
• Values of Newton-Gregory forward interpolating polynomial (1/3)*(2*n-7)*(2*n^2-11*n+18).at n=28A030434
• Values of Newton-Gregory forward interpolating polynomial (1/3)*(2*n - 3)*(2*n^2 - 3*n + 4).at n=26A030441
• a(n) = (5*n+2)*(5*n+7).at n=28A085036
• Triangle T(n,k) = total of number at last index for all set partitions of n into k parts.at n=39A120095
• A007318 * A000203.at n=11A131046
• a(n) = Sum_{k=0..n} phi(k^2 + 1), where phi is the Euler totient function (A000010).at n=45A333170