-20
domain: Z
Appears in sequences
- Expansion of Product_{k >= 1} (1 - x^k)^4.at n=80A000727
- Expansion of Product_{n>=1} (1-x^n)^5.at n=9A000728
- Canonical enumeration of integers: interleaved positive and negative integers with zero prepended.at n=40A001057
- The negative integers.at n=19A001478
- Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^4 in powers of x.at n=46A001482
- Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^4 in powers of x.at n=23A001482
- Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^4 in powers of x.at n=13A001482
- Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^6 in powers of x.at n=3A001484
- a(n) = -n.at n=20A001489
- Coefficient of x^p (p = n-th prime) in x * Product_{k>=1} (1-x^k)^2*(1-x^11k)^2.at n=71A002070
- Generalized sum of divisors function: excess of sum of odd divisors of n over sum of even divisors of n.at n=11A002129
- Generalized sum of divisors function: excess of sum of odd divisors of n over sum of even divisors of n.at n=37A002129
- Glaisher's chi numbers. a(n) = chi(4*n + 1).at n=51A002171
- Coefficients in the expansion of B^2*C^3 in Watson's notation of page 118.at n=58A002300
- Coefficients in the expansion of B^2*C^3 in Watson's notation of page 118.at n=40A002300
- Expansion of (1-4*x)^(5/2).at n=6A002422
- Expansion of (1-4*x)^(5/2).at n=3A002422
- Coefficients of a Dirichlet series.at n=37A002558
- Glaisher's function G(n) (18 squares version).at n=1A002609
- Expansion of ( Sum_{n = -infinity..infinity} x^(n^2) )^(-10).at n=1A004411