169438

Appears in sequences

• Expansion of 1 / ((1-x)^2*(1-x^2)*(1-x^3)*...*(1-x^9)).at n=44A288344
• Records in A347113.at n=22A347307
• a(n) = number of possible pairs of descent sets of a permutation of 1,2,...,n and its inverse.at n=10A380394