-6221

Appears in sequences

• Shifts left and changes sign under Weigh transform.at n=23A038074
• Values of n such that L(6) and N(6) 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=30A226926