44017

Properties

Appears in sequences

• Numbers k such that 21^k - 20^k is prime.at n=8A062587
• Leading diagonal of triangle in A072467.at n=27A072468
• Fibonacci sequence beginning 13, 9.at n=18A206609
• Primes p such that f(f(p)) is prime where f(x) = Phi_6(x).at n=17A237446
• Number of partitions p of n such that max(p) - (number of parts of p) is not a part of p.at n=41A238545
• Number of (n+1)X(2+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=2A250530
• Number of (n+1)X(3+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=1A250531
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=7A250536
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=8A250536
• Primes of form n^2 + 2401.at n=25A256835
• Prime numbersat n=4580