29097
domain: N
Appears in sequences
- a(1) = 1, a(n) = a(n-1) + phi(a(n-1)).at n=20A074693
- Numbers n such that phi(n) = phi(n+12) and n is not divisible by 2.at n=33A217141
- Expansion of Product_{k>=1} (1 - x^(7*k))^52/(1 - x^k)^53 in powers of x.at n=3A282931
- Number of excursions of length n with Motzkin-steps avoiding the consecutive steps UD, HU, HH and DH.at n=28A329691
- Number of rises in all compositions of n with parts in {1,2,3} and adjacent differences in {-1,1}.at n=44A383549