143489071

Appears in sequences

• a(n) = A137576((3^n-1)/2).at n=15A140320
• Start with 1 and 5, then repeatedly adjoin the smallest number that is greater than the last term and not equal to the sum of a subset of the existing terms.at n=34A188793
• a(n) = 10*3^n+1.at n=15A199112