263520

Appears in sequences

• Glaisher's function J(n) (18 squares version).at n=14A002613
• Theta series of 14-dimensional lattice KAPPA14.2 with minimal norm 4.at n=5A047629
• (-1)-sigma super perfect numbers: (-1)sigma((-1)sigma(x))=2*x, where if x=Product p(i)^r(i) then (-1)sigma(x)=Product (-1+Sum p(i)^s(i), s(i)=1 to r(i)); (-1)sigma(1)=1.at n=7A051153
• Expansion of e.g.f. (1 - x)^(-x^2).at n=9A353228
• Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. (1 - x)^(-x^k).at n=75A355609