OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1).
FORMULA
a(n+1) = A002492(n) + 10.
a(n) = 2*(15+n-3*n^2+2*n^3)/3 for n>0. G.f.: -(9*x^4-30*x^3+20*x^2-6*x-1) / (x-1)^4. - Colin Barker, Jul 18 2013
MAPLE
MATHEMATICA
LinearRecurrence[{4, -6, 4, -1}, {1, 10, 14, 30, 66}, 50] (* Harvey P. Dale, Aug 21 2016 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Reinhard Zumkeller, Mar 15 2006
EXTENSIONS
More terms from Colin Barker, Jul 18 2013
STATUS
approved