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Search: id:A007465
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| A007465 |
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Exponential-convolution of triangular numbers with themselves.
(Formerly M4195)
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+0
1
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| 1, 6, 30, 128, 486, 1692, 5512, 17040, 50496, 144512, 401664, 1089024, 2890240, 7529472, 19298304, 48754688, 121602048, 299827200, 731643904, 1768685568, 4239261696, 10081796096, 23805296640, 55839817728
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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M. Bernstein and N. J. A. Sloane, Some canonical sequences of integers, Linear Alg. Applications, 226-228 (1995), 57-72; erratum 320 (2000), 210.
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FORMULA
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G.f.:(-1-6*x^4+12*x^3-10*x^2+4*x)/(2*x-1)^5 [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 10 2009]
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CROSSREFS
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Sequence in context: A002934 A131458 A032205 this_sequence A073389 A036068 A081895
Adjacent sequences: A007462 A007463 A007464 this_sequence A007466 A007467 A007468
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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