74593

Appears in sequences

• Strong pseudoprimes to base 3.at n=17A020229
• Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-5).at n=30A023435
• Base-3 Euler-Jacobi pseudoprimes.at n=31A048950
• Overpseudoprimes to base 3.at n=9A141350
• a(0)=1, a(1)=0, a(2)=2, a(3)=1, a(n)=a(n-2)+a(n-3)+a(n-4) for n>3.at n=31A167704
• Euler pseudoprimes to base 3: composite integers such that abs(3^((n - 1)/2)) == 1 mod n.at n=37A262051
• Column k=3 of triangle A257673.at n=9A321948
• Super pseudoprimes (or superpseudoprimes) to base 3: Fermat pseudoprimes to base 3 all of whose divisors that are larger than 1 are either primes or Fermat pseudoprimes to base 3.at n=32A328662
• Composite numbers k such that (1 - w)^(k-1) == 1 (mod k) in the ring of Eisenstein integers (w = (-1 + sqrt(3)*i)/2).at n=30A329705
• Composite numbers k of the form 4u+1 for which the odd part of phi(k) divides k-1.at n=31A339870
• Composite numbers k == 1, 11 (mod 12) such that 3^((k-1)/2) == 1 (mod k).at n=23A375917