1162261467

Appears in sequences

• Powers of 3: a(n) = 3^n.at n=19A000244
• 19th powers: a(n) = n^19.at n=3A010807
• a(n) = 3^(2*n+1).at n=9A013708
• a(n) = 3^(3*n + 1).at n=6A013732
• a(n) = 3^(4*n + 3).at n=4A013779
• a(n) = 3^(5*n + 4).at n=3A013829
• Denominator of sum of -19th powers of divisors of n.at n=2A017702
• Powers of sqrt(3) rounded to nearest integer.at n=38A017914
• Smallest power of 3 that begins with n.at n=10A018857
• a(n) = Sum_{k=0..2n} (k+1) * A026323(n, 2n-k).at n=18A027313
• Smallest number > 1 equal to sum of n-th powers of its base-9 digits, or 0 if no such number exists (written in base 10).at n=18A033841
• Earliest sequence where a(a(n))=3^n.at n=19A038756
• Expansion of g.f. (2-3*x-x^2)/((1-x^2)*(1-3*x)).at n=19A052929
• Powers of 3 which are not powers of 3^3.at n=12A055156
• a(n) = 3^floor((n+1)/2).at n=37A056449
• Scaled Chebyshev U-polynomials evaluated at sqrt(3)/2; expansion of 1/(1 - 3*x + 3*x^2).at n=37A057083
• a(n) = 3^prime(n).at n=7A057901
• Smallest lucky number that is the product of n lucky numbers.at n=18A064703
• Floor[ Sum_{1..n} 1/i ]^n.at n=18A067053
• a(1) = 1 and then smallest nontrivial n-th power starting with 1.at n=18A067442