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Search: id:A051916
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| A051916 |
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The Greek sequence: 2^a * 3^b * 5^c where a = 0,1,2,3..., b,c in {0,1}, excluding the terms 1,2; that is: (a,b,c) =/= (0,0,0), (1,0,0)):. |
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2
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| 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1024, 1280, 1536, 1920, 2048, 2560, 3072, 3840, 4096, 5120, 6144, 7680, 8192, 10240, 12288, 15360, 16384, 20480
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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George E. Martin: Geometric Constructions. New York: Springer, 1997, p. 140.
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FORMULA
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G.f.: (3x^7+2x^6+2x^5+2x^4+6x^3+5x^2+4x+3)/(1-2x^4).
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CROSSREFS
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Sequence in context: A121540 A026512 A026506 this_sequence A130216 A120162 A002859
Adjacent sequences: A051913 A051914 A051915 this_sequence A051917 A051918 A051919
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KEYWORD
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nonn,easy,nice
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AUTHOR
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Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Dec 17 1999
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 18 1999
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