599074577

Appears in sequences

• a(n) = F(2n+1) + F(2n-1) - 1.at n=21A005592
• a(n) = 5*F(n)^2 + 3*(-1)^n where F(n) are the Fibonacci numbers A000045.at n=21A047946
• Cyclotomic polynomials Phi_n at x=phi, ceiled up (where phi = tau = (sqrt(5)+1)/2).at n=41A063707
• a(n) = Lucas(3*n) - 1.at n=14A100233
• Odd terms in A014217.at n=21A142718
• Continued fraction expansion for exp( Sum_{n>=1} 1/(n*A014448(n)) ), where A014448(n) = (2+sqrt(5))^n + (2-sqrt(5))^n.at n=20A174506
• a(n) = numerator of Sum_{i=1..n} binomial(2n-i-1,i-1)/i.at n=20A175385
• Partial sums of A215602.at n=20A215580
• a(n) = Lucas(2*n) + 2*(-1)^n + 1.at n=20A366508