-6270

Appears in sequences

• a(n) = coefficient of x^n*y^n in Product_{n>=1} (1 - (x^n + y^n)).at n=104A322213
• Fourier coefficients of the modular form (1/t_{6a}) * sqrt( 1-12*sqrt(-3)/t_{6a} ) * F_{6a}^6.at n=19A341563
• E.g.f. A(x) satisfies: 1 + 4*x = exp(-1) * Sum_{n>=0} A(x)^(n^2) / n!.at n=4A350436