4234320

Appears in sequences

• Triangle read by rows: T(n,k) is the number of linear chord diagrams on 2n vertices with one marked chord such that exactly k of the remaining n-1 chords contain the marked chord.at n=29A336600
• Expansion of e.g.f. 1/(1 + LambertW(-x^3 * (exp(x) - 1))).at n=10A392897