2963520

Appears in sequences

• a(n) = n^2*(n+1)*(n+2)!/48.at n=5A037959
• a(n) = n*(n-1)^3*(n-2)^3*(n-3).at n=8A064321
• Triangle read by rows: T(n,k) is the number of n-bead necklaces with exactly k different colored beads.at n=51A087854
• Coefficients for rewriting generalized falling factorials into ordinary falling factorials.at n=38A136656
• Triangle: p(x) = (t/log(1 + t))^a0*(1 + t)^x; a0=2; weights (n+1)!*n!.at n=33A137381
• G.f. is Q_1(q) where q*Q_1(q^4) is a series quadrisection of the g.f. of A161800.at n=17A161802
• Triangle T(n, k) = A090443(n-1)/(A090443(k-1)*A090443(n-k-1)) read by rows.at n=49A173882
• Triangle T(n, k) = A090443(n-1)/(A090443(k-1)*A090443(n-k-1)) read by rows.at n=50A173882
• Coefficient triangle of the Hermite-Bell polynomials for power -2.at n=35A215216
• Number of primitive (=aperiodic) n-bead necklaces with colored beads of exactly 7 different colors.at n=3A254079
• Triangle read by rows: T(n,k) is the number of simple connected graphs on n labeled nodes with k articulation vertices, (0 <= k <= n).at n=51A370064
• Numbers k > 1 such that k / A054841(k) is an integer.at n=30A371278
• Expansion of e.g.f. 1 / sqrt(1 + x^2 * log(1 - x)).at n=10A375698