-4930

Appears in sequences

• Alternating sum of centered octagonal pyramidal numbers.at n=19A270695
• Expansion of 1 - x/(1 - x^2/(1 - x^3/(1 - x^4/(1 - x^5/(1 - x^6/(1 - ... - x^n/(1 - ...))))))), a continued fraction.at n=31A291148