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A290156
Tribonacci-like sequence of composite numbers with a(0) = 99202581681909167232, a(1) = 67600144946390082339 and a(2) = 139344212815127987596.
2
99202581681909167232, 67600144946390082339, 139344212815127987596, 306146939443427237167, 513091297204945307102, 958582449463500531865, 1777820686111873076134, 3249494432780318915101, 5985897568355692523100, 11013212687247884514335
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.: (99202581681909167232 - 31602436735519084893*x - 27458513813171261975*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((99202581681909167232 - 31602436735519084893*x - 27458513813171261975*x^2) / (1 - x - x^2 - x^3) + O(x^20)) \\ Colin Barker, Jul 22 2017
CROSSREFS
Sequence in context: A321136 A135955 A104840 * A095436 A247262 A046061
KEYWORD
nonn,easy
AUTHOR
Seiichi Manyama, Jul 22 2017
STATUS
approved