6585452
domain: N
Appears in sequences
- Expansion of (1+x)(1+x^2)/(1-x-x^3).at n=40A003410
- Expansion of (1-x)/(1-x-2*x^2-x^3).at n=22A078007
- a(n) = Sum_{k=0..n} C(n-k, floor(k/2)).at n=41A097333
- Number of new rationals produced at the n-th iteration by applying the map t -> {t+1, -1/t} to nonzero terms, starting with S[0] = {1}.at n=41A226275