OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (-1,-1,-2).
PROG
(PARI) Vec((1-x)/(1+x+x^2+2*x^3) + O(x^50)) \\ Jinyuan Wang, Apr 07 2020
CROSSREFS
KEYWORD
sign,easy
AUTHOR
N. J. A. Sloane, Nov 17 2002
STATUS
approved