OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1)
FORMULA
G.f. -4*x*(1+x+22*x^2+22*x^3+22*x^4+x^5+x^6)/(x-1)^9. - R. J. Mathar, Aug 11 2012
MATHEMATICA
CoefficientList[Series[-4x (1+x+22x^2+22x^3+22x^4+x^5+x^6)/(x-1)^9, {x, 0, 30}], x] (* or *) LinearRecurrence[{9, -36, 84, -126, 126, -84, 36, -9, 1}, {0, 4, 40, 304, 1720, 7480, 26404, 79240, 209304}, 30] (* Harvey P. Dale, Jul 04 2023 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Henry Bottomley, Apr 24 2001
EXTENSIONS
a(25)-a(29) from Stefano Spezia, Aug 31 2023
STATUS
approved