165871

Appears in sequences

• Number of maximal independent vertex sets (and minimal vertex covers) in the n-web graph.at n=17A287498
• a(n) is the number of positive integers k for which Sum_{i=1..r} p_i = Sum_{i=1..r} e_i = n, where p_1^e_1*...*p_r^e_r is the canonical prime factorization of k.at n=37A390784