5883768

Appears in sequences

• a(n) = 31*binomial(2*n,n-4) + Sum_{i=1..n-4} binomial(2*n,n-4-i)*(4+i).at n=11A182025
• Number of 5-cycles in the n-triangular graph.at n=18A290939
• a(n) = (12*n)!*(2*n)!/((7*n)!*(4*n)!*(3*n)!).at n=2A295449