797161

Properties

Appears in sequences

• Largest prime factor of 3^(2n+1) - 1.at n=19A002591
• Largest prime factor of 3^(2n+1) - 1.at n=6A002591
• a(n) = (3^n - 1)/2.at n=13A003462
• Number of free subsets of multiplicative group of GF(3^n).at n=12A007231
• Cyclotomic polynomials at x=3.at n=13A019321
• Cyclotomic polynomials at x=-3.at n=26A020502
• Gaussian binomial coefficients [ n,12 ] for q = 3.at n=1A022203
• Prime numbers that are the sum of the divisors of some n.at n=34A023195
• Erroneous version of A003462.at n=11A045886
• a(n) = 2*a(n-1) + 3*a(n-2), a(0) = a(1) = 1.at n=13A046717
• Numbers that are repdigits in base 3.at n=25A048328
• a(n) = a(n-1) + 3*a(n-2) - 3*a(n-3), with a(0)=a(1)=1, a(2)=4.at n=24A052993
• a(n) = a(n-1) + 3*a(n-2) - 3*a(n-3), with a(0)=a(1)=1, a(2)=4.at n=25A052993
• a(n) = Sum_{j=0..12} n^j.at n=3A060887
• Terms of A000203 that are prime.at n=28A062700
• Zsigmondy numbers for a = 3, b = 1: Zs(n, 3, 1) is the greatest divisor of 3^n - 1^n (A024023) that is relatively prime to 3^m - 1^m for all positive integers m < n.at n=12A064079
• Primes of the form sigma(m^2) where m is a composite number ordered by values m.at n=11A065403
• Smallest prime p such that 2*p+1 has n prime factors (with multiplicity).at n=12A072060
• Largest prime factor of 3^n - 1.at n=25A074477
• Largest prime factor of 3^n - 1.at n=12A074477