3486784400

Appears in sequences

• a(n) = 3^n - 1.at n=20A024023
• a(n) = 9^n-1.at n=10A024101
• a(n) = n*9^n - 1.at n=8A064755
• a(n) = (n-1)^n - 1.at n=10A085606
• Maximal term in Collatz-iteration started at 3^n-1.at n=19A087971
• a(n) = 0^n + 3^n - 1.at n=20A103453
• a(n) = 3^n - (-1)^n.at n=20A105723
• a(n) = n^10 - 1.at n=8A123867
• a(n) = 2*A132357(n).at n=19A135263
• a(n) = A000244(n) - A010684(n).at n=20A141317
• a(n) is the smallest number k > 1 such that k^n - 1 is divisible by 3^n.at n=19A316505
• Number of length n primitive (=aperiodic or period n) 9-ary words which are earlier in lexicographic order than any other word derived by cyclic shifts of the alphabet.at n=10A320074