-922
domain: Z
Appears in sequences
- Expansion of (1-x)^(-1)/(1+2*x+x^2-2*x^3).at n=14A077928
- Triangle T(n,k)= n! if k=0, T(n,k) = -(n-k)!*A003319(k) if k > 0.at n=42A142156
- Define E(n) = Sum_{k >= 0} (-1)^floor(k/3)*k^n/k! for n = 0,1,2,.... Then E(n) is an integral linear combination of E(0), E(1) and E(2). This sequence lists the coefficients of E(2).at n=8A143630
- O.g.f.: exp( Sum_{n>=1} -(sigma(2*n^3) - sigma(n^3)) * (-x)^n/n ).at n=8A225957
- a(n) = Sum_{k=0..2*n} (-1)^k * binomial(12*n,6*k).at n=0A232732
- G.f. A(x,y) satisfies: A(x,y) = x*y + 1/A(x,x*y), with A(0,y) = 1.at n=151A275760
- a(n) = Sum_{k=0..floor(n/6)} (-1)^k*binomial(n,6*k).at n=12A307040