-543
domain: Z
Appears in sequences
- Matrix inverse of triangle A055340(n+1,k).at n=36A055347
- Column 1 of triangle A055347.at n=8A055348
- a(n+1) = a(n) - a(floor(n/2)), with a(0)=0, a(1)=1.at n=62A062187
- Expansion of 1/(1-2*x+2*x^2+x^3).at n=12A077944
- Expansion of 1/(1+2*x+2*x^2-x^3).at n=12A077992
- Expansion of (1-x)/(1-x+x^2+2*x^3).at n=21A078017
- Diagonal sums of triangle A110324.at n=32A110326
- Second differences of A000463; first differences of A188652.at n=32A188653
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 305", based on the 5-celled von Neumann neighborhood.at n=13A271163
- Expansion of Product_{k>0} (1 - x^k)^(4*k).at n=12A316463
- Expansion of Product_{i>0, j>0, k>0} (1 - x^(i^2 + j^2 + k^2)).at n=46A321432
- a(1)=0; thereafter a(n) = (n-1)*sigma(n)-n*sigma(n-1) where sigma is the sum-of-divisors function A000203.at n=32A335153
- G.f. A(x) satisfies: A(x) = A(x^3 - x^5)/x^2.at n=17A350479
- Dirichlet g.f.: zeta(s) / (zeta(s-1) * zeta(s-2)).at n=51A351654