89040

Appears in sequences

• Triangle T(n,k), n>=1, 0<=k<=n-1, read by rows: T(n,k)/(n-1)! is the coefficient of x^k in polynomial p_n for the n-th row sequence of A145153.at n=37A145142
• 1st column of A145142.at n=7A145143
• Numbers with prime factorization p*q*r*s*t^4 (where p, q, r, s, t are distinct primes).at n=30A190110
• Triangle read by rows giving numbers B(n,k) arising in the enumeration of doubly rooted tree maps.at n=15A260039
• Triangle read by rows giving numbers H(n,k), number of classes of twin-tree-rooted maps with n edges whose root bond contains k edges.at n=15A260040
• Number of (undirected) Hamiltonian paths in the n-dipyramidal graph.at n=21A307939
• Expansion of Sum_{k>=1} mu(k)*log(1 + x^k/(1 - x^k)^3)/k.at n=33A308290