256160

Appears in sequences

• Pisot sequence P(7,11), a(0)=7, a(1)=11, a(n+1) is the nearest integer to a(n)^2/a(n-1). Agrees with A021014 only for n <= 20.at n=24A021013
• Number of points of l_1 norm n in the "diamond" lattice D^+_4.at n=40A035878
• Number of points in the standard root system version of the D_4 lattice having L_infinity norm n.at n=20A117216