35626

Appears in sequences

• a(n) = floor(n*(n-1)*(n-2)*(n-3)/16).at n=29A011926
• Generalized Bessel numbers.at n=13A145062
• O.g.f.: exp( Sum_{n>=1} -(sigma(2*n^2) - sigma(n^2)) * (-x)^n/n ).at n=31A215603