38439

Appears in sequences

• Largest n-digit number - largest n-digit triangular number.at n=8A095866
• Expansion of (1+t^2+4*t^3+2*t^4+t^5+3*t^6)/((1-t)^2*(1-t^2)*(1-t^3)^2).at n=33A100779
• a(n) = 40*n^2 - 1.at n=30A158598