534513

Appears in sequences

• G.f. is the polynomial (1-x^3) * (1-x^6) * (1-x^9) * (1-x^12) * (1-x^15) * (1-x^18) * (1-x^21) * (1-x^24) / (1-x)^8.at n=21A162596
• a(n) is the constant term in expansion of Product_{k=1..n} (x^k + 1 + 1/x^k)^3.at n=5A369372