-2429

Appears in sequences

• a(n) = n^2 - (n-1)^2 - (n-2)^2 - ... - 1^2.at n=20A179297
• a(n) = Sum_{i=1..n} (-1)^{i+1} prime(i)^2, where prime(k) denotes the k-th prime: alternating sum of the squares of the first n primes.at n=19A240860
• Expansion of 1 - x/(1 - x^3/(1 - x^6/(1 - x^10/(1 - x^15/(1 - x^21/(1 - ... - x^(n*(n+1)/2)/(1 - ...))))))), a continued fraction.at n=56A290976