597780

Appears in sequences

• Sums of 4 distinct powers of 9.at n=34A038489
• Expansion of (1+8*x+72*x^2+648*x^3)/(1-x-6561*x^4).at n=6A158779
• Jordan function ratio J_8(n)/J_2(n).at n=8A194533
• a(n) = n^2*sigma_2(n).at n=27A386745