-26
domain: Z
Appears in sequences
- a(n) = floor(tan(n)).at n=99A000503
- Canonical enumeration of integers: interleaved positive and negative integers with zero prepended.at n=52A001057
- The negative integers.at n=25A001478
- a(n) = -n.at n=26A001489
- Coefficient of x^p (p = n-th prime) in x * Product_{k>=1} (1-x^k)^2*(1-x^11k)^2.at n=73A002070
- Glaisher's chi numbers. a(n) = chi(4*n + 1).at n=67A002171
- Glaisher's chi numbers. a(n) = chi(4*n + 1).at n=43A002171
- Glaisher's chi numbers chi(p) for p a prime of the form 4m+1.at n=25A002172
- Glaisher's chi numbers chi(p) for p a prime of the form 4m+1.at n=17A002172
- Glaisher's chi numbers chi(p) for p a prime of the form 4m+1.at n=55A002172
- Coefficients in the expansion of B^2*C^3 in Watson's notation of page 118.at n=71A002300
- Related to Genocchi numbers.at n=3A002317
- Ferromagnetic susceptibility series for f.c.c. lattice.at n=12A002924
- Magnetization series for diamond.at n=4A002930
- Power series expansion of the Rogers-Ramanujan continued fraction 1+x/(1+x^2/(1+x^3/(1+x^4/(1+...)))).at n=38A003823
- Expansion of (Sum_{n=-inf..inf} x^(n^2))^(-13).at n=1A004414
- From fundamental unit of Z[ (-n)^{1/4} ].at n=5A006829
- Moebius transform applied thrice to natural numbers.at n=57A007432
- Expansion of e.g.f.: log(1+tan(x)*cosh(x)).at n=4A009375
- Expansion of log(1+tan(x)/cos(x)).at n=4A009380