29221

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 91.at n=19A020430
• Primes in A126554.at n=8A126555
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 0), (0, 1, -1), (1, -1, 1), (1, 1, 1)}.at n=8A149735
• Primes of the form floor(binomial(k,2)/4).at n=38A171574
• Primes of the form k^2 + prime(k).at n=25A184935
• Primes p such that f(f(p)) is prime, where f(x) = x^4 + x^3 + x^2 + x + 1 = A053699(x).at n=30A237445
• Number of length n+1 0..3 arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.at n=6A250414
• T(n,k)=Number of length n+1 0..k arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.at n=42A250419
• Number of length 7+1 0..n arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.at n=2A250424
• Primes p such that both 2p-1 and 2p^2-2p+1 are prime.at n=39A274609
• Smallest number k with A355915(k) = n.at n=34A356792
• Prime numbersat n=3177