505290270
domain: N
Appears in sequences
- a(n) = floor(2^n / n).at n=33A000799
- Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,3,2,0.at n=14A037709
- Number of subsets of {1,2,..n} that sum to 1 mod n.at n=33A064355
- a(n) = round( 2^n/n ).at n=33A065482
- List of codewords in binary lexicode with Hamming distance 15 written as decimal numbers.at n=12A075961
- a(n) = floor of (2^n-1)/n.at n=33A082482
- Inverse Euler transform of central binomial coefficients A000984.at n=17A131764
- Number of n-bead necklaces of 5 colors allowing reversal, with no adjacent beads having the same color.at n=16A208541
- Numbers a(n) with property a(n) + a(n+4) = 2^(n+4) - 1 = A000225(n+4).at n=29A224520