149246

Appears in sequences

• Revert transform of (1 - x - 4x^2 + x^3)/(1 - 4x^2 - 2x^3).at n=10A049137
• a(n) = floor( Sum_{k=0..n-1} n^k / (k! * a(k)) ), for n > 0 with a(0) = 1.at n=21A357549