67728
domain: N
Appears in sequences
- Smaller of Smith brothers.at n=32A050219
- McKay-Thompson series of class 8D for the Monster group.at n=43A112143
- McKay-Thompson series of class 16b for the Monster group.at n=43A112151
- Numbers k such that sopfr(k + omega(k)) = sopfr(k), where sopfr(i) = A001414(i) and omega(i) = A001221(i).at n=36A187878
- a(n) = (1/2) * Sum_{d|n} (2*d)^(n/d).at n=15A359733