281447

Appears in sequences

• Pisot sequence T(6,10), a(n) = floor(a(n-1)^2/a(n-2)).at n=25A020741
• Number of compositions of n in which the minimal multiplicity of parts equals 2.at n=20A244165
• a(n) = number of tuples (a,b,c,d) of natural numbers a,b,c,d <= n with gcd(a,b)=gcd(b,c)=gcd(c,d)=gcd(d,a)=1.at n=32A256391