129140162

Appears in sequences

• a(n) = 3^n - 1.at n=17A024023
• a(n+1) = smallest number not containing any digits of a(n), working in base 3.at n=34A030439
• Numbers that are repdigits in base 3.at n=34A048328
• Numbers of the form 3^m - 1 or 2*3^m - 1; i.e., the union of sequences A048473 and A024023.at n=34A062318
• a(n) = 3^n + (-1)^n - [1/(n+1)], where [] represents the floor function.at n=17A084182
• a(n) = 3^n + (-1)^n.at n=17A102345
• a(n) = 0^n + 3^n - 1.at n=17A103453
• a(n) is the smallest integer not yet in the sequence with no common base-3 digit with a(n-1).at n=41A158928
• a(n) = 3*9^n-1.at n=8A198960
• Main diagonal of triangle A321600; a(n) = A321600(n,n-1) for n >= 1.at n=16A322116