4037670

Appears in sequences

• G.f.: 1/((1-x)*(1-x^2))^6.at n=20A038166
• Expansion of (1+15*x+15*x^2+x^3)/(1-x)^12.at n=10A059603
• Numbers k that are norm-superabundant in Gaussian integers, i.e., A103230(m)/m^2 < A103230(k)/k^2 for all m < k.at n=21A332321
• a(n) is the least number k that has exactly n divisors <= sqrt(k) of the form 4*j+1.at n=28A379693