28562

Appears in sequences

• sigma_4(n): sum of 4th powers of divisors of n.at n=12A001159
• a(n) = n^4 + 1.at n=13A002523
• Numerator of sum of -4th powers of divisors of n.at n=12A017671
• Cyclotomic polynomials at x=13.at n=8A019331
• Cyclotomic polynomials at x=-13.at n=8A020512
• Numbers k such that k^2 is palindromic in base 13.at n=24A029998
• Sums of distinct powers of 13.at n=17A033049
• Sum of fourth powers of unitary divisors.at n=12A034678
• Numbers n such that n^3 is palindromic in base 13.at n=8A046247
• a(n) = Sum_{d|n, d==1 (mod 4)} d^4.at n=12A050448
• a(n) = Sum_{d|n, d==1 (mod 4)} d^4.at n=38A050448
• a(n) = Sum_{d|n, d==1 (mod 4)} d^4.at n=25A050448
• a(n) = Sum_{d|n, d==1 mod 4} d^4 - Sum_{d|n, d==3 mod 4} d^4.at n=25A050456
• a(n) = Sum_{d|n, d==1 mod 4} d^4 - Sum_{d|n, d==3 mod 4} d^4.at n=12A050456
• a(n) = Sum_{d|n, n/d=1 mod 4} d^4.at n=12A050463
• a(n) = Sum_{d|n, n/d=3 mod 4} d^4.at n=38A050467
• a(n) = Sum_{d|n, n/d=1 mod 4} d^4 - Sum_{d|n, n/d=3 mod 4} d^4.at n=12A050468
• Sum of 4th powers of odd divisors of n.at n=25A051001
• Sum of 4th powers of odd divisors of n.at n=12A051001
• Numbers k such that k^12 == 1 (mod 13^4).at n=12A056095