119218851371
domain: N
Appears in sequences
- Bisection of Lucas sequence: a(n) = L(2*n+1).at n=26A002878
- Prime Lucas numbers (cf. A000032).at n=15A005479
- a(n) = Lucas(4*n+1).at n=13A056914
- a(1) = 1, a(2) = 2, a(n+1) = n*a(1) + (n-1)*a(2) + ... + (n-r)*a(r+1) + ... + a(n).at n=27A093960
- Lucas numbers for which the sum of the digits is also a Lucas number.at n=10A117764
- Lucas numbers for which the sum of the digits is a prime.at n=17A117790
- Primes corresponding to the indices of A059791.at n=14A118839
- Numbers n such that the quintic polynomial x^5 - 10*n*x^2 - 24*n has Galois group A_5 over rationals.at n=25A135064
- Odd terms in A014217.at n=26A142718
- Primes which are the sum of four consecutive Fibonacci numbers.at n=13A153867
- Lucas(3n+2) = Fibonacci(3n+1) + Fibonacci(3n+3).at n=17A163063
- a(n) = Lucas(prime(n)).at n=15A180363
- Integers n such that n^2 is the difference of two Lucas numbers (A000032).at n=33A221471
- Numbers m such that m^2 - 1 is the product of three distinct Fibonacci numbers > 1.at n=33A242103
- Numbers k such that k^2+2 is the product of a Fibonacci number and a Lucas number.at n=31A259561
- Primes of the form L(k)*L(k+1)-1, where L(k) is the k-th Lucas number (A000032).at n=8A271429
- a(n) = smallest prime factor of n-th Lucas number A000032(n), or 1 if there are none.at n=53A280104
- Primes in the bisected Lucas sequence A002878.at n=10A285992
- a(n) = sqrt(5*b(n)^2 - 4) with b(n) = Fibonacci(6*n+5) = A134497(n).at n=8A305316
- Numbers k such that k^2 is a centered 40-gonal number.at n=17A351353