186588

Appears in sequences

• a(n) = n*(2*n-1)*(2*n+1).at n=36A035328
• Denominators of continued fraction convergents to sqrt(621).at n=8A042193
• a(0)=1, a(n) = (3n-1)*3n*(3n+1)/2 for n>0.at n=24A157024
• a(n) = 576*n^2 - 2*n.at n=17A158371
• a(n) = 1296*n^2 - 36.at n=11A158737
• Smallest fixed points (>0) of the base-2*n Kaprekar map.at n=35A319839