464353

Appears in sequences

• a(n) = left term in M^n * [1 0 0], where M = the 3 X 3 matrix [1 -1 0 / -1 4 -3 / 0 -3 3].at n=9A094431
• Expansion of e.g.f. exp(x / (1 - x^2)^2).at n=8A373620