-5939

Appears in sequences

• Values of n such that L(14) and N(14) 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=20A227517
• E.g.f.: exp(2*x) * (BesselI(0,2*x) - BesselI(1,2*x)) / (sec(x) + tan(x)).at n=9A337446