129240

Appears in sequences

• Expansion of Product_{k>=1} 1/(1 - Lucas(k)*x^k), where Lucas = A000204.at n=15A306484
• Expansion of e.g.f. 1 / (1 - log(1 + 3*x) / 3).at n=7A354750
• Ulam numbers that are oblong (or promic) numbers.at n=30A379828