20215

Appears in sequences

• Values of m, the main key or generating number for Pythagorean triangles in which S (the odd short leg) and U (the hypotenuse) are twin primes.at n=41A051891
• Numbers n with omega(n) = omega of 3 nearest larger and 3 nearest smaller neighbors.at n=9A101936
• a(n) = 14*n^2 - 1.at n=37A158485
• a(n) = 56*n^2 - 1.at n=18A158658
• Number of partitions p of n such that floor(mean(p)) or ceiling(mean(p)) is a part.at n=38A241344
• Number of numbers whose base 5/4 expansion (see A024634) has n digits.at n=40A245357
• Euler transform of A034448.at n=15A301981