5920200

Appears in sequences

• Amicable quadruples: the numbers c referred to in A036471.at n=4A036473
• a(n) = B(n)*C(n), where B(n) are Bell numbers (A000110) and C(n) are Catalan numbers (A000108).at n=8A064299
• a(n) = binomial(n+3,3)*binomial(n+6,3).at n=21A105939
• Molecular topological indices of the tetrahedral graphs.at n=12A192847
• a(n) = (9*n)!/((7*n)!*n!^2).at n=3A273629
• Coefficient of x^n in the expansion of (1+x^4+x^5)^n.at n=27A387200