200398

Appears in sequences

• G.f.: A(x) = Product_{n>=1} 1/(1 - 2^n*x^n)^(2/2^n).at n=15A110152
• Expansion of g.f. 1 - 2*x*(-7 - 10*x + x^2)/(x - 1)^4.at n=33A152100
• Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n} having k adjacent blocks of size 3, i.e., blocks of the form (i,i+1,i+2) (0 <= k <= floor(n/3)).at n=31A184176