4194306
domain: N
Appears in sequences
- Numbers that are the sum of 3 positive 11th powers.at n=10A004814
- Numbers that are the sum of at most 3 positive 11th powers.at n=22A004909
- Dirichlet convolution of d(n) (# of divisors) with b_n=2^(n-1).at n=22A034771
- a(n) = 2 + 2^(n+1)*(n-1).at n=17A036799
- a(n) = 2^n + 2.at n=22A052548
- Number of elements in the continued fraction for Sum_{k=0..n} 1/2^2^k.at n=23A056469
- a(1) = 1; for n > 1, a(n) = smallest number > a(n-1) having exactly n divisors.at n=23A069654
- a(n) = A089709(n+1)/A089709(n).at n=22A089985
- Number of ways of 3-coloring an annulus consisting of n zones joined like a pearl necklace.at n=21A092297
- a(0) = 2, a(n) = 2^n + 2 for n>=1.at n=22A133140
- Binomial transform of [1, 5, -1, 5, -1, 5, ...]. Inverse binomial transform of A134350.at n=21A134351
- 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=24A174316
- a(n) = 4^(n-1) + 2: Number of acute angles after n iterations of the Koch snowflake construction.at n=11A178789
- Numbers that can be represented as both a^x + x and b^y + b, for some a, b, x, y > 1.at n=23A253914
- Interleave 2^n + 2 and 2^n + 1.at n=42A261723
- a(0) = 3, a(n+1) = 2*a(n) + periodic sequence of length 2: repeat [-5, 4].at n=22A280293
- The number whose binary indices are the nontrivial divisors of n (greater than 1 and less than n).at n=45A328337
- Terms of A354169 that are not powers of 2, in order of appearance.at n=20A354680
- Expansion of 1 / ((1-x)^3 - x^3)^2.at n=17A392584