72742

Appears in sequences

• a(n) = Sum_{k=0..n} k^p*q^k for p = 2 and q = -2.at n=10A232601
• Expansion of Sum_{i>=1} mu(i)^2*x^i/(1 - x^i) * Product_{j>=i} 1/(1 - mu(j)^2*x^j), where mu() is the Moebius function (A008683).at n=41A284829