-2673

Appears in sequences

• Alternating sum of cubes, i.e., Sum_{k=0..n} k^p*q^k for p=3, q=-1.at n=17A232599
• Difference between sums of quadratic residues and non-residues modulo n (residues are not necessarily coprime to n).at n=98A255644
• Expansion of (q*j(q))^(1/4) where j(q) is the elliptic modular invariant (A000521).at n=2A289301
• 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=55A290976
• Minimum determinant of a n X n Hankel matrix with entries in {0,1}.at n=11A390669