53480

Appears in sequences

• Coordination sequence for 4-dimensional face-centered cubic orthogonal lattice.at n=20A008529
• Numbers n such that product of double factorials of the digits of n equals sigma(n).at n=13A158989
• Expansion of psi(x^4) / chi(-x)^2 in powers of x where psi(), chi() are Ramanujan theta functions.at n=34A260599
• Nonunitary weird numbers: numbers that are nonunitary abundant but not nonunitary pseudoperfect.at n=16A327948
• a(n) = Sum_{k=1..n} (-1)^(k+1) * floor((n/k)^3).at n=38A350222