OFFSET
0,3
LINKS
Daniel Starodubtsev, Table of n, a(n) for n = 0..10000
Index entries for linear recurrences with constant coefficients, signature (3,-3,1).
FORMULA
G.f.: -x*(1+72*x) / (x-1)^3. - R. J. Mathar, Feb 05 2011
a(n) = n*(73*n - 71)/2.
E.g.f.: exp(x)*(x + 73*x^2/2). - Nikolaos Pantelidis, Feb 10 2023
MAPLE
A098230 := proc(n) n*(73*n-71)/2 ; end proc:
seq(A098230(n), n=0..20) ; # R. J. Mathar, Feb 04 2011
PROG
(Magma) [ n*(73*n - 71)/2: n in [0..50] ]; // Vincenzo Librandi, Feb 04 2011
(PARI) a(n)=n*(73*n-71)/2 \\ Charles R Greathouse IV, Oct 16 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, Oct 25 2004
STATUS
approved