24157817
domain: N
Appears in sequences
- a(n) = 3*a(n-1) - a(n-2) for n >= 2, with a(0) = a(1) = 1.at n=19A001519
- a(n) = 3*a(n-2) - a(n-4), a(0)=2, a(1)=1, a(2)=3, a(3)=2. Alternates Lucas (A000032) and Fibonacci (A000045) sequences for even and odd n.at n=37A005247
- Odd Fibonacci numbers.at n=24A014437
- Smallest Fibonacci number beginning with n.at n=24A020345
- Pisot sequence E(2,3).at n=34A020695
- Pisot sequences E(3,5), P(3,5).at n=33A020701
- Pisot sequences E(5,8), P(5,8).at n=32A020712
- Least Fibonacci number ending with n.at n=17A023184
- a(n) = Fibonacci(prime(n)).at n=11A030426
- a(n) = Fibonacci(3*n + 1).at n=12A033887
- a(n) = Fibonacci(4*n + 1).at n=9A033889
- a(n+2) = -a(n+1) + a(n) (signed Fibonacci numbers) with a(-2) = a(-1) = 1; or Fibonacci numbers (A000045) extended to negative indices.at n=39A039834
- Fibonacci numbers having initial digit '2'.at n=6A045726
- Pisot sequences L(2,5), E(2,5).at n=17A048575
- Converse numbers: composite Fibonacci numbers Fib(k) that are congruent to Legendre symbol (k/5) mod k.at n=3A048593
- Fibonacci numbers containing no pair of consecutive equal digits (probably finite).at n=27A050762
- Nonprime Fibonacci numbers with a prime index.at n=3A050937
- Smallest Fibonacci number that is divisible by n-th prime.at n=20A051694
- Squarefree Fibonacci numbers.at n=29A061305
- Primitive part of Fibonacci(n).at n=36A061446