49701

Appears in sequences

• a(n) = A050314(2n+1,1): column 1 of triangle.at n=28A050316
• Triangle read by rows: T(n,k) = number of collections of up to k subsets of [n] covering [n], with [0]={}; n>=0, k=0..2^n.at n=28A381683
• Second component B of the pairs (A, B) from A389379.at n=9A389390