-3648

Appears in sequences

• Expansion of 1 / (Sum_{n=-oo..oo} x^(n^2))^3.at n=7A004404
• Expansion of Product_{m>=1} (1 - m*q^m)^4.at n=15A022664
• Expansion of theta_3(q) / theta_3(q^2) in powers of q.at n=31A080015
• Expansion of f(-q) / f(q) in powers of q where f() is a Ramanujan theta function.at n=31A108494
• A triangular sequence from 2^n times the coefficients of characteristic polynomials of a rational tridiagonal matrix type: M(3)= {{1/2,-1,0} {-1,1/2,-m}, {0,-1,1/2}}};m=-1; polynomial recursion associated is: p(x, n) = (1 - 2*x)*p(x, n - 1)/2 - p(x, n - 2);.at n=39A136330