OFFSET
0,4
FORMULA
BIN1 sends a to b where b(n) = (-1)^n Sum_{i=0..n} C(n+1, i+1) a(i).
G.f.: (x^4+4*x^3+7*x^2+4*x+1)/((1+x)*(1+x-x^2)*(1+x+x^2)). [sign corrected by Georg Fischer, Apr 15 2020]
MATHEMATICA
CoefficientList[Series[(x^4+4*x^3+7*x^2+4*x+1)/((1+x)*(1+x-x^2)*(1+x+x^2)), {x, 0, 45}], x] (* Georg Fischer, Apr 15 2020 *)
CROSSREFS
KEYWORD
sign,eigen
AUTHOR
Christian G. Bower, Jan 09 2000
STATUS
approved