157877

Properties

Appears in sequences

• a(n) = -a(n-1) - a(n-2) + a(n-3), a(0)=0, a(1)=0, a(2)=1.at n=42A057597
• Number of nonisomorphic groups with orders indexed by least prime signatures.at n=41A098887
• Expansion of (A(x)^2+A(x^2))/2 where A(x) = A001006(x)-1.at n=14A275209
• Prime numbersat n=14512