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Search: id:A145027
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| A145027 |
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a(n)=a(n-1)+a(n-2)+a(n-3) with a(1) = 2, a(2) = 3, a(3) = 4. |
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+0
2
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| 2, 3, 4, 9, 16, 29, 54, 99, 182, 335, 616, 1133, 2084, 3833, 7050, 12967, 23850, 43867, 80684, 148401, 272952, 502037, 923390, 1698379, 3123806, 5745575, 10567760, 19437141, 35750476, 65755377, 120942994, 222448847, 409147218, 752539059
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OFFSET
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1,1
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MATHEMATICA
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a=2; b=3; c=4; lst={a, b, c}; Do[d=a+b+c; AppendTo[lst, d]; a=b; b=c; c=d, {n, 5!}]; lst
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CROSSREFS
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Cf. A000073, A000213, A001590, A003265, A056816, A081172, A001644.
Sequence in context: A096781 A119721 A098969 this_sequence A088275 A014281 A086865
Adjacent sequences: A145024 A145025 A145026 this_sequence A145028 A145029 A145030
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 30 2008
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