OFFSET
3,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (8, -27, 50, -55, 36, -13, 2).
FORMULA
G.f.: x^3(-x^7+7x^6-21x^5+35x^4-35x^3+21x^2-7x+2)/[(1-2x)(1-x)^6].
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved