279842

Appears in sequences

• sigma_4(n): sum of 4th powers of divisors of n.at n=22A001159
• a(n) = n^4 + 1.at n=23A002523
• Numerator of sum of -4th powers of divisors of n.at n=22A017671
• Sum of fourth powers of unitary divisors.at n=22A034678
• Sum of 4th powers of odd divisors of n.at n=22A051001
• A level 11 weight 5 form.at n=22A065103
• a(n) = n^4*Product_{distinct primes p dividing n} (1+1/p^4).at n=22A065960
• Sum of two powers of 23.at n=10A073215
• Semiprimes of the form n^4 + 1.at n=13A186688
• Numbers m such that sigma(m-1) is a prime.at n=25A270413
• a(n) = Sum_{ d >= 1, d divides n} (-1)^(n-d)*d^4.at n=22A279395
• a(n) = Sum_{d|n} (-1)^(n/d+1)*d^4.at n=22A284900
• a(0) = 0, a(n) = Sum_{0<d|n, n/d odd} d^4 for n > 0.at n=23A285989
• a(n) = Sum_{d divides n} (-1)^(d + n/d) * d^4.at n=22A321560
• Sum of the 4th powers of the squarefree divisors of n.at n=22A351267
• Sum of the 4th powers of the odd proper divisors of n.at n=45A352032