84494

Appears in sequences

• Numbers k such that k-th and (k+1)-st term of A038593 differ by 4.at n=22A038635
• a(n) is the number of equivalence classes of triples of sets each with n or fewer elements where two triples are equivalent if the number of elements in all intersections is the same.at n=9A319777
• Triangle read by rows: T(n,k) is the number of unlabeled weakly connected digraphs with n arcs and k vertices, k = 1..n+1.at n=53A350789