144440

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 19.at n=20A031697
• a(n) = 361*n^2 + 2*n.at n=19A158309
• Expansion of Product_{k>=1} ((1+x^k)/(1-x^k))^(2*k).at n=11A261386