-5042
domain: Z
Appears in sequences
- Related to Genocchi numbers.at n=6A002317
- Expansion of (1+x+5x^2+2x^3) / (1-4x^2+x^4).at n=15A108413
- a(n,m) =Floor[N[(-2 + Sqrt[3])^n + (-2 - Sqrt[3])^n]/2^m].at n=21A117809
- a(n) = Sum_{k<=n} A007955(k) * A008683(n-k+1) = Sum_{k<=n} A007955(k) * mu(n-k+1), where A007955(m) = product of divisors of m.at n=20A174942
- Floor(integral_{n=0..infinity} (log(x) - log(1 + x^2))^n/(1 + x^2)^2 dx).at n=7A221648
- Expansion of e.g.f. 1/(1 - log(2 - exp(x))).at n=8A361494
- Triangle read by rows: T(n,k) = (-1)^n * n! + (-1)^(k+1) * k! for n >= 2 and 1 <= k <= n-1.at n=16A373967