343876
domain: N
Appears in sequences
- Primitive weird numbers: weird numbers with no proper weird divisors.at n=17A002975
- Start with a single triangle; at n-th generation add a triangle at each vertex, allowing triangles to overlap; sequence gives total population of triangles at n-th generation.at n=28A061777
- Weird numbers m such that the sum of their divisors below A033880(m) is greater than A033880(m) = abundance of m.at n=4A100696
- Weird numbers (A006037) not divisible by 5.at n=15A138850
- Primitive weird numbers (A002975) of the form 2^k*p*q*x with k >= 0 and odd p, q, x >= 3.at n=7A258401
- Primitive weird numbers (PWN) of the form 2^k*p*q*r with k > 0 and where p < q < r are odd primes.at n=7A258883
- Least primitive weird number, pwn, (A002975) whose abundance is divisible by the n-th prime (A000040), or 0 if no such pwn exists.at n=5A265728
- Primitive weird numbers (pwn; A002975) divisible by 4 but not 8.at n=6A322524