2812500

Appears in sequences

• Triangle of coefficients in expansion of (1+5x)^n.at n=52A013612
• a(n) = Sum_{k=0..n} (k+1) * T(n,k), with T given by A026386.at n=16A026955
• Triangle whose (i,j)-th entry is 5^(i-j)*binomial(i,j).at n=47A038243
• Goedel encoding of the prime factors of n, in increasing order and repeated according to multiplicity.at n=27A074736
• 5th binomial transform of (0,0,1,0,0,0, ...).at n=9A081135
• a(n) = 5^(n-1)*n*(n+1)/2.at n=8A084902
• a(n) = (n^3 - n^2)*5^n.at n=5A128988
• Number of permutations of 4 indistinguishable copies of 1..n arranged in a circle with exactly 1 local maximum.at n=7A159727
• Triangle read by rows: T(0,0) = 1; T(n,k) = 5*T(n-1,k) + T(n-2,k-1) for k = 0..floor(n/2); T(n,k)=0 for n or k < 0.at n=38A305837
• Exponential barely abundant numbers: exponential abundant numbers whose exponential abundancy is closer to 2 than that of any smaller exponential abundant number.at n=11A336254