36541

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 5x + 8.at n=8A023316
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 18.at n=16A031606
• Number of unlabeled n-node simple graphs with at most one cycle in each connected component.at n=13A134964
• Prime numbers p such that p +- ((p-1)/7) are primes.at n=18A137770
• Primes p such that the multiplicative order of 2 modulo p is (p-1)/9.at n=25A152309
• Primes of the form 2*n^2 + 78*n + 37.at n=18A217501
• Primes p of the form 420k + 1 for some k.at n=35A217587
• a(n) is the least number k whose digit sums are 2*n-1, 2*n and 2*n+1 in bases 2*n-1, 2*n and 2*n+1 respectively.at n=13A379896
• Prime numbersat n=3874