-3959

Appears in sequences

• a(n)=1+(1/12)(n*(n+1)*(n+3)*(4-n)).at n=15A080260
• 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=41A226924