743491
domain: N
Appears in sequences
- a(0)=2. a(n) = the a(n-1)th integer from among those positive integers coprime to n.at n=25A125554
- The number of permutations in S_n for which the number of reduced words is minimized with respect to the numbers of braid and commutation classes: |R(w)| = |B(w)| + |C(w)| - 1.at n=12A290954
- Number of integer compositions y of n with a fixed point y(i) = i.at n=21A352875