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A290157
Tribonacci-like sequence of composite numbers with a(0) = 151646890045, a(1) = 836564809606 and a(2) = 942785024683.
2
151646890045, 836564809606, 942785024683, 1930996724334, 3710346558623, 6584128307640, 12225471590597, 22519946456860, 41329546355097, 76074964402554, 139924457214511, 257328967972162, 473328389589227, 870581814775900, 1601239172337289, 2945149376702416
OFFSET
0,1
LINKS
Ivan Lunev, A Tribonacci-Like Sequence of Composite Numbers, Journal of Integer Sequences, Vol. 20 (2017), Article 17.3.2.
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
Sequence in context: A104832 A290122 A234379 * A288283 A271819 A304235
KEYWORD
nonn,easy
AUTHOR
Seiichi Manyama, Jul 22 2017
STATUS
approved