-18
domain: Z
Appears in sequences
- Canonical enumeration of integers: interleaved positive and negative integers with zero prepended.at n=36A001057
- The negative integers.at n=17A001478
- a(n) = -n.at n=18A001489
- Coefficient of x^p (p = n-th prime) in x * Product_{k>=1} (1-x^k)^2*(1-x^11k)^2.at n=31A002070
- Coefficient of x^p (p = n-th prime) in x * Product_{k>=1} (1-x^k)^2*(1-x^11k)^2.at n=59A002070
- a(n) = Sum_{t=0..n} g(t)*g(n-t) where g(t) = A002121(t).at n=12A002122
- Generalized sum of divisors function: excess of sum of odd divisors of n over sum of even divisors of n.at n=33A002129
- High temperature series for spin-1/2 Heisenberg specific heat on 3-dimensional simple cubic lattice.at n=2A002169
- Glaisher's chi numbers. a(n) = chi(4*n + 1).at n=29A002171
- Glaisher's chi numbers. a(n) = chi(4*n + 1).at n=69A002171
- Glaisher's chi numbers. a(n) = chi(4*n + 1).at n=45A002171
- Glaisher's chi numbers chi(p) for p a prime of the form 4m+1.at n=26A002172
- Glaisher's chi numbers chi(p) for p a prime of the form 4m+1.at n=18A002172
- Glaisher's chi numbers chi(p) for p a prime of the form 4m+1.at n=62A002172
- Expansion of (1-4*x)^(9/2).at n=1A002424
- Susceptibility series for b.c.c. lattice.at n=7A002925
- Expansion of tan(log(1+x)).at n=4A003708
- Power series expansion of the Rogers-Ramanujan continued fraction 1+x/(1+x^2/(1+x^3/(1+x^4/(1+...)))).at n=33A003823
- Expansion of ( Sum_{n = -infinity..infinity} x^(n^2) )^(-9).at n=1A004410
- Coefficients of modular function G_2(tau).at n=10A005760