OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (23, -170, 496, -480).
FORMULA
G.f.: 1/((1-2*x)*(1-4*x)*(1-5*x)*(1-12*x)).
a(0)=1, a(1)=23, a(2)=359, a(3)=4843, a(n)=23*a(n-1)-170*a(n-2)+ 496*a(n-3)- 480*a(n-4). - Harvey P. Dale, Jan 28 2013
a(n) = (3*12^(n+3)-80*5^(n+3)+105*4^(n+3)-28*2^(n+3))/1680. - Yahia Kahloune, May 23 2013
MATHEMATICA
CoefficientList[Series[1/((1-2x)(1-4x)(1-5x)(1-12x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{23, -170, 496, -480}, {1, 23, 359, 4843}, 30] (* Harvey P. Dale, Jan 28 2013 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved