262146

Appears in sequences

• Numbers that are the sum of 3 positive 9th powers.at n=10A003392
• Numbers that are the sum of at most 3 positive 9th powers.at n=22A004887
• Numbers that are the sum of at most 4 positive 9th powers.at n=37A004888
• Dirichlet convolution of d(n) (# of divisors) with b_n=2^(n-1).at n=18A034771
• a(n) = 2^n + 2.at n=18A052548
• Numbers k such that 8^k == -1 (mod k-1).at n=25A055691
• Number of elements in the continued fraction for Sum_{k=0..n} 1/2^2^k.at n=19A056469
• Numbers k such that x^k + x^3 + 1 is irreducible over GF(2).at n=52A057461
• a(n) = A089709(n+1)/A089709(n).at n=18A089985
• Number of ways of 3-coloring an annulus consisting of n zones joined like a pearl necklace.at n=17A092297
• A106486-encodings for the minimal representatives of each equivalence class of the finite combinatorial games.at n=45A126011
• a(0) = 2, a(n) = 2^n + 2 for n>=1.at n=18A133140
• Binomial transform of [1, 5, -1, 5, -1, 5, ...]. Inverse binomial transform of A134350.at n=17A134351
• a(n) = smallest number that leads to a new cycle under the base-4 Kaprekar map of A165012.at n=17A165029
• Semi-sums (means) of a Fermat prime and a Mersenne prime.at n=31A174057
• Sequence defined by a(0)=a(1)=a(2)=1, a(3)=2, a(4)=6 and the formula a(n)=2^(n-2)+2 for n>=5.at n=20A174316
• a(n) = 4^(n-1) + 2: Number of acute angles after n iterations of the Koch snowflake construction.at n=9A178789
• Expansion of (1 + 2*x + 6*x^2)/(1 - x - x^2 - 2*x^3) in powers of x.at n=17A186575
• 1/4 the number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock having distinct clockwise edge differences.at n=34A209722
• Minimal number (in decimal representation) with n nonprime substrings in base-8 representation (substrings with leading zeros are considered to be nonprime).at n=27A217108