93750

Appears in sequences

• Expansion of (1+x)/(1-5*x).at n=7A003948
• a(n) = Product_{i=0..6} floor((n+i)/7).at n=36A009641
• Numbers of form 5^i*6^j, with i, j >= 0.at n=29A025622
• a(n) = n*5^n.at n=6A036291
• Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*5^j.at n=22A038247
• Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*5^j.at n=26A038247
• Sums of two distinct powers of 5.at n=27A038474
• Sums of two powers of 5.at n=34A055237
• Numbers n such that n | 4^n + 3^n + 2^n + 1^n.at n=38A056643
• Numbers k such that k | 6^k + 5^k + 4^k + 3^k + 2^k.at n=41A057256
• Numbers n that are the hypotenuse of exactly 6 distinct integer-sided right triangles, i.e., n^2 can be written as a sum of two squares in 6 ways.at n=4A097219
• Numbers n such that the period length P(n) of the Fibonacci sequence mod n is a multiple of n.at n=38A105953
• a(n) = 5^n * n*(n + 1).at n=5A116156
• Triangle T, read by rows, where matrix power T^5 has powers of 5 in the secondary diagonal: [T^5](n+1,n) = 5^(n+1), with all 1's in the main diagonal and zeros elsewhere.at n=11A117256
• a(3n) = 3a(3n-1)-3a(3n-2)+2a(3n-3), a(3n+1) = 3a(3n)-3a(3n-1)+2a(3n-2), a(3n+2) = 3a(3n+1)-3a(3n), a(0) = 0, a(1) = 1, a(2) = 2.at n=23A131761
• Array, a(n,k) = total size of all n-length words on a k-letter alphabet, read by antidiagonals.at n=49A134574
• Areas, in ascending order, of integer-sided right triangles whose hypotenuses are squares.at n=17A141502
• Number of reduced words of length n in Coxeter group on 6 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.at n=7A164741
• Number of reduced words of length n in Coxeter group on 6 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.at n=7A165213
• Number of reduced words of length n in Coxeter group on 6 generators S_i with relations (S_i)^2 = (S_i S_j)^10 = I.at n=7A165777