188952

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 are excluded by (i.e., are outside and do not contain) the marked chord.at n=23A336601
• Number of powerful numbers that are not powers of primes (i.e. are in A286708) that do not exceed 2^n.at n=33A380431