3281250

Appears in sequences

• Expansion of 1/(1-5*x)^5.at n=6A036071
• Expansion of (1-5x)/((1+5x)(1-10x)).at n=7A091883
• Triangle, read by rows, of Stirling numbers of second kind, S2(n,k), multiplied by k^k, for n >= 1, 1<=k<=n.at n=32A105197
• a(n) = n*(n-1)*5^n.at n=7A128799
• a(n) = (n^3 - n)*5^n.at n=5A128963
• a(n) = (n/4)*5^(n/2)*((1+sqrt(5))^2+(-1)^n*(1-sqrt(5))^2).at n=14A187275