2690420

Appears in sequences

• Smallest k > 0 such that n*k + 1 is an n-th power.at n=15A076943
• a(n) = floor(3^n / n).at n=15A092763
• Main diagonal of array in A098691.at n=7A098692
• A threes sequence that gets more even factors out: a(n) = (3^n - 1)*(3^n + 1)/2^(4 - (n mod 2)).at n=8A152299
• Floor((3^n-1)/n).at n=15A225585