OFFSET
0,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..3735
Ivan Lunev, A Tribonacci-Like Sequence of Composite Numbers, Journal of Integer Sequences, Vol. 20 (2017), Article 17.3.2.
Index entries for linear recurrences with constant coefficients, signature (1,1,1)
FORMULA
From Colin Barker, Jul 22 2017: (Start)
G.f.: (151646890045 + 684917919561*x - 45426674968*x^2) / (1 - x - x^2 - x^3).
a(n) = a(n-1) + a(n-2) + a(n-3) for n>2.
(End)
PROG
(PARI) Vec((151646890045 + 684917919561*x - 45426674968*x^2) / (1 - x - x^2 - x^3) + O(x^20)) \\ Colin Barker, Jul 22 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Seiichi Manyama, Jul 22 2017
STATUS
approved