410805domain: NAppears in sequencesNumbers k such that phi(k-1) + phi(k+1) = sigma(k)/2.at n=10A076648Expansion of psi(x^2)^8 * (psi(x)^8 + psi(-x)^8) / 2 in powers of x^2 where psi() is a Ramanujan theta function.at n=8A135828