19683

Appears in sequences

• Powers of 3: a(n) = 3^n.at n=9A000244
• The cubes: a(n) = n^3.at n=27A000578
• a(n) = max{(n - i)*a(i) : i < n}; a(0) = 1.at n=27A000792
• Ninth powers: a(n) = n^9.at n=3A001017
• a(n) = n^(n^2), or (n^n)^n.at n=3A002489
• Numbers that are the sum of 3 nonzero 8th powers.at n=9A003381
• Numbers of the form 3^i*5^j with i, j >= 0.at n=36A003593
• Numbers of the form 3^i*7^j with i, j >= 0.at n=30A003594
• Numbers of the form 3^i*11^j.at n=25A003597
• Numbers that are the sum of at most 3 nonzero 8th powers.at n=19A004876
• Numbers that are the sum of at most 4 nonzero 8th powers.at n=31A004877
• Numbers that are the sum of at most 2 positive 9th powers.at n=6A004886
• Numbers that are the sum of at most 3 positive 9th powers.at n=10A004887
• Numbers that are the sum of at most 4 positive 9th powers.at n=15A004888
• Numbers that are the sum of at most 5 positive 9th powers.at n=21A004889
• Numbers that are the sum of at most 6 positive 9th powers.at n=28A004890
• Numbers n such that n divides 2^n + 1.at n=17A006521
• Numbers of the form 2^i or 3^j.at n=23A006899
• Losing initial configurations in 2-hole Tchuka Ruma.at n=22A007780
• a(n) = Product_{i=0..8} floor((n+i)/9).at n=27A009714