137760

Appears in sequences

• Number of labeled pure 2-complexes on n nodes (0-simplexes) with 4 2-simplexes and 11 1-simplexes.at n=2A054648
• Coefficient array of numerator polynomials of o.g.f.s (rising powers) for the columns of triangle A008517 (second-order Eulerian numbers).at n=23A112692
• Molecular topological indices of the cocktail party graphs.at n=20A181773
• Numbers with prime factorization pqrst^5.at n=16A190383
• a(n) is the number of 2 X 2 matrices over Z_p with determinant in {1,-1} where p = prime(n).at n=12A262354
• a(n) = phi(A291789(n)).at n=25A291805
• Triangle read by rows: T(n,k) is the number of n-bead necklaces using exactly k colors with no adjacent beads having the same color.at n=42A330618
• a(n) is the first term k of A329902 for which A056239(k) = n.at n=27A330743
• Primorial deflation of A133411(n), where A133411(n) is the smallest highly composite number of the form k*a(n-1) where k is an integer greater than 1.at n=27A330744
• Triangle read by rows of partial Bell polynomials B_{n,k}(x_1,...,x_{n-k+1}) evaluated at 2, 2, 12, 72, ..., (n-k)(n-k+1)!, divided by (n-k+1)!, n >= 1, 1 <= k <= n.at n=51A353132