OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (19,-128,356,-336).
FORMULA
a(n) = -2^n/5 +16*4^n/3 -27*6^n/1 +343*7^n/15. - R. J. Mathar, Jun 20 2013
MATHEMATICA
CoefficientList[Series[1/((1-2x)(1-4x)(1-6x)(1-7x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{19, -128, 356, -336}, {1, 19, 233, 2351}, 30] (* Harvey P. Dale, Jun 03 2021 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved