515592

Appears in sequences

• 5-dimensional pyramidal numbers: a(n) = n*(n+1)*(n+2)*(n+3)*(2n+3)/5!.at n=29A005585
• Maximum cycle size in range [A014137(n-1)..A014138(n-1)] of permutation A071665/A071666.at n=19A089874
• a(n) = n*(n+1)*(n+2)*(n+4)*(n+23)/120.at n=30A101855
• Triangle read by rows: coefficients of third-order hypergeometric-harmonic polynomials.at n=34A222063
• Scaled g.f. S(u) = Sum_{n>0} a(n)*16*(u/16)^n satisfies T(u) = d/du S(u), with T(u) as defined by A318417; sequence gives a(n).at n=5A318614
• Expansion of Sum_{1<=i<=j<=k} q^(i+j+k)/( (1-q^i)*(1-q^j)*(1-q^k) )^2.at n=29A374930