84422

Appears in sequences

• Bisection (odd part) of Chebyshev sequence with Diophantine property.at n=5A077244
• Combined Diophantine Chebyshev sequences A077246 and A077244.at n=11A077248
• a(n) = n*(2*n^2 + 5*n + 1).at n=34A163832
• G.f.: Product_{k>=1} (1 + 2*x^(k^2)) / (1-x^k).at n=34A280224