28143753123
domain: N
Appears in sequences
- a(n) = 11*a(n-1) + a(n-2).at n=10A001946
- Bisection of Lucas numbers: a(n) = L(2*n) = A000032(2*n).at n=25A005248
- Numerators of continued fraction convergents to sqrt(125).at n=15A041226
- Numerators of continued fraction convergents to sqrt(605).at n=19A042160
- a(n) = Lucas(10*n).at n=5A065705
- a(n) = (F(2*n-1) + F(2*n+1))*(5/6 - cos(2*Pi*n/3)/3), where F(n) = Fibonacci(n).at n=25A128052
- Lucas(3n+2) = Fibonacci(3n+1) + Fibonacci(3n+3).at n=16A163063
- Nonprime Lucas numbers.at n=35A172159
- Denominators of A178381(4*n+1)/A178381(4*n).at n=25A179132
- Number of ways to place k non-attacking knights on a 2 X n horizontal cylinder, summed over all k>=0.at n=24A201222
- Numerators in a product expansion for sqrt(5).at n=2A219010
- Numbers n such that n^2 + 1 is the product of three distinct Fibonacci numbers > 1.at n=23A245688
- Lucas numbers (A000204) of the form n^2 + 2.at n=13A246453
- Solutions x to the Pell-Fermat equation x^2 - 5*y^2 = 4.at n=12A342710
- Smallest Lucas number beginning with n.at n=27A355439