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Search: id:A014772
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| A014772 |
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Squares of even hexagonal numbers. |
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+0
1
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| 36, 784, 4356, 14400, 36100, 76176, 142884, 246016, 396900, 608400, 894916, 1272384, 1758276, 2371600, 3132900, 4064256, 5189284, 6533136, 8122500, 9985600, 12152196, 14653584, 17522596, 20793600, 24502500, 28686736
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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G.f.: 4*x*(9+151*x+199*x^2+25*x^3)/(1-x)^5 [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 11 2009]
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CROSSREFS
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Cf. A014635.
Sequence in context: A144941 A036084 A004338 this_sequence A110206 A133051 A028222
Adjacent sequences: A014769 A014770 A014771 this_sequence A014773 A014774 A014775
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KEYWORD
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nonn,easy
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AUTHOR
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Mohammad K. Azarian (ma3(AT)evansville.edu)
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EXTENSIONS
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G.f. proposed by Maksym Voznyy checked and corrected by R. J. Mathar, Sep 16 2009.
More terms from Erich Friedman (erich.friedman(AT)stetson.edu).
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