9586980
domain: N
Appears in sequences
- a(n) = floor(2^n / n).at n=27A000799
- a(n) = floor(2^(n+2)/7).at n=23A033138
- Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 2, 1, 0.at n=11A037521
- Number of subsets of {1,2,..n} that sum to 1 mod n.at n=27A064355
- Expansion of (1-x)/(1 - x - x^2 - 2*x^3).at n=25A078010
- a(n) = floor of (2^n-1)/n.at n=27A082482
- Sum of totient function values of powers of n, as exponent runs from 1 to n.at n=7A091262
- a(n) = (8^n - 1)*4/7.at n=8A108019
- a(n) + a(n+1) + a(n+2) = 2^n.at n=25A152732
- A023001 interleaved with 2*A023001 and 4*A023001.at n=26A155803
- The "Fouriest" numbers: numbers that can be expressed as a string of 4's longer than the original number in some base.at n=14A349031