50833

Properties

Appears in sequences

• Indices of prime Fibonacci numbers.at n=31A001605
• Primes p from A031924 such that A052180(primepi(p)) = 29.at n=20A052236
• Prime indices of prime Fibonacci numbers.at n=30A083668
• A014486-indices of symmetric binary trees.at n=29A083940
• Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 3,2 4,2 5,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid.at n=9A155380
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 7*b^2.at n=16A216535
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 3*b^2.at n=16A216552
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 2*b^2.at n=17A216558
• Numbers n such that the n-th Fibonacci number is prime, but cannot be written in the form a^2 + 5*b^2.at n=16A216561
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 6*b^2.at n=9A216569
• Numbers n such that the n-th Fibonacci number is prime, but cannot be written in the form a^2 + 10*b^2.at n=23A216574
• Numbers n such that (7^n + 4^n)/11 is prime.at n=8A218373
• Prime numbersat n=5206