535680

Appears in sequences

• a(n) = 6*a(n-1) + 6*a(n-2), n>2, a(0)=1, a(1)=5, a(2)=35.at n=7A155127
• Composite numbers m such that Product_{i=1..k} (p_i/(p_i-1)) / Sum_{i=1..k} (p_i/(p_i+1)) is an integer, where p_i are the k prime factors of m (with multiplicity).at n=23A230112
• a(n) is the least number k such that A349497(k) = n, or -1 if no such k exists.at n=34A349498