1586131

Appears in sequences

• a(n) = 3^n - 2^n.at n=13A001047
• Nexus numbers (n+1)^13-n^13.at n=2A022529
• G.f.: (2-x)/((1+2x)(1-3x)); e.g.f.: exp(3x)+exp(-2x); a(n)=3^n+(-2)^n.at n=13A087451
• Semiprimes of the form 3^n - 2^n.at n=3A095027
• Number of distinct values taken by the sums of all subsets of the n-th roots of unity.at n=25A107861
• Zsigmondy numbers for a = 3, b = 2: Zs(n, 3, 2) is the greatest divisor of 3^n - 2^n (A001047) that is relatively prime to 3^m - 2^m for all positive integers m < n.at n=12A109325
• 3^p - 2^p, where p = prime(n).at n=5A135171
• Least s(k) such that n divides s(k)-s(j) for some j<k, where s(j)=3^j-2^j.at n=28A205108
• Number of second differences of arrays of length n + 2 of numbers in 0..2.at n=10A228212
• Number of third differences of arrays of length n+3 of numbers in 0..2.at n=9A228254
• Number of achiral color patterns (set partitions) for a row or loop of length n using exactly 3 colors (sets).at n=27A304973
• a(n) are the denominators corresponding to A370823(n).at n=12A370824