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A099464
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Trisection of tribonacci numbers.
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5
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0, 1, 7, 44, 274, 1705, 10609, 66012, 410744, 2555757, 15902591, 98950096, 615693474, 3831006429, 23837527729, 148323355432, 922906855808, 5742568741225, 35731770264967, 222332455004452, 1383410902447554
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| Let A=[1,1,1;2,4,3;1,2,2]. A099464(n) is given by the (1,2) term in A^n.
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FORMULA
| G.f.: x//(1-7x+5x^2-x^3); a(n)=7a(n-1)-5a(n-2)+a(n-3); a(n)=A000073(3n).
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CROSSREFS
| Cf. A009943.
Sequence in context: A094113 A190974 A027279 * A093738 A091127 A166775
Adjacent sequences: A099461 A099462 A099463 * A099465 A099466 A099467
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KEYWORD
| easy,nonn
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Oct 16 2004
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