154292
domain: N
Appears in sequences
- From George Gilbert's marks problem: jumping 5 marks at a time (initial positions).at n=19A019993
- Least positive integer k such that both k and k*n belong to the set {m>0: 2*prime(prime(m))+1 = prime(p) for some prime p}.at n=20A261362
- a(n) is the smallest positive integer which can be represented as the sum of n distinct nonzero fourth powers in exactly n ways, or -1 if no such integer exists.at n=7A360306