-1205

Appears in sequences

• Values of n such that L(4) and N(4) 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=22A226924
• Expansion of e.g.f. 1/(exp(x) - log(1 - x)).at n=5A352139