1029174

Appears in sequences

• Expansion of b(2)*b(4)*b(6)/(x^8-x^4-x+1), where b(k) = (1-x^k)/(1-x).at n=43A265055
• a(n) = Sum_{k=1..n} 2^k * phi(k), where phi is the Euler totient function A000010.at n=15A324913