128927

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 53 ones.at n=19A031821
• Pentanacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) + a(n-5) if n>=5, and a(n) = n otherwise.at n=19A135056