38125

Appears in sequences

• a(n) = n^2*(5*n-3)/2.at n=25A006597
• Numbers that are the sum of 2 nonzero squares in exactly 5 ways.at n=13A025288
• Numbers that are the sum of 2 distinct nonzero squares in exactly 5 ways.at n=10A025306
• Expansion of 1/((1+5*x)*(1-15*x)).at n=4A053537
• Numbers n such that n | 7^n + 6^n + 5^n + 4^n + 3^n.at n=14A057255
• Numbers k such that k | 6^k + 5^k + 4^k + 3^k + 2^k.at n=33A057256
• Integer quotients arising in A071687.at n=59A071788
• a(0)=1, a(1)=5, a(n) = 10*a(n-1) - 5*a(n-2) for n > 1.at n=5A165225
• a(n) = 61*n^2.at n=25A174333
• Number of partitions p of n such that (number of numbers in p of form 3k) = (number of numbers in p of form 3k+1).at n=48A241744
• Numbers that are the sum of 2 squares in exactly 5 ways.at n=20A294716
• Number of integer partitions of the n-th semiprime into semiprimes.at n=44A338902
• Positive integers representable by the two cyclotomic binary forms Phi_5(x,y) and Phi_12(u,v).at n=17A345894
• Odd numbers m such that there exists no k for which the denominator of d(k)/k = m where d(k) is the number of divisors of k (A000005).at n=30A353320
• a(n) = (3*n^5 + 5*n^3)/8.at n=9A372583