197640

Appears in sequences

• A(x) satisfies A005408(x) = A(x)/A(x^2), A005408 = odd numbers.at n=34A173283
• Numbers k such that k = Product (p_j^e_j) = Product (pi(p_j)*p_j), where pi() = A000720.at n=44A304194
• Array read by antidiagonals: T(n,m) is the number of maximal matchings in the rook graph K_n X K_m.at n=48A341847
• Array read by antidiagonals: T(n,m) is the number of maximal matchings in the rook graph K_n X K_m.at n=51A341847
• Number of maximal matchings in the 3 X n rook graph.at n=6A341848