-2801domain: ZAppears in sequencesExpansion of -1/(1 + x + x^2 + x^3 + x^4 - x^5).at n=42A124314Values of n such that L(10) and N(10) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=10A227448Expansion of Product_{k>=1} 1/(1 + k^k*x^k).at n=5A292311