599040

Appears in sequences

• a(n) = 2^n*n!*(2*n+1).at n=6A014481
• Number of orbits of length n in a map whose periodic points come from A059991.at n=27A060481
• Expansion of (1-x)/(1+2*x+2*x^2+2*x^3).at n=30A078071
• a(n) = 12*A002605(n).at n=12A172011
• The Wiener index of the linear phenylene with n hexagons.at n=31A224454
• Expansion of f(-x)^8 * Q(x) in powers of x where f() is a Ramanujan theta function and Q() is a Ramanujan Lambert series.at n=15A277076
• Number of subsets of {1..n} such that no two elements have the same sorted prime signature.at n=38A326438
• a(n) is the smallest number m such that tau(m) = n*tau(m-1) = n*tau(m+1) or 0 if no such m exists, where tau(k) = A000005(k).at n=32A350936