45042

Appears in sequences

• Least k such that cototient(k) has exactly n distinct prime factors.at n=5A280907
• a(n) = 2^n*(n/8 + 1) - n.at n=12A291097
• a(n) = Sum_{k=0..floor(n/3)} binomial(3*n-8*k,k).at n=20A373640
• Expansion of 1/(1 - x * (1 + x^4)^2).at n=30A373706