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Search: id:A060080
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| A060080 |
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Scaled sums of squares. |
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+0
2
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| 1, 5, 56, 1080, 31680, 1310400, 72576000, 5181926400, 463325184000, 50697529344000, 6663103856640000, 1035678099456000000, 187913434365296640000, 39357424864287129600000
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,200
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FORMULA
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a(n)= sum(k^2, k=1..n)*((n-1)!)^2 = (n+1)!*(n-1)!*(2*n+1)/3!.
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PROGRAM
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(PARI) { for (n=1, 201, write("b060080.txt", n - 1, " ", (n + 1)!*(n - 1)!*(2*n + 1)/6); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 01 2009]
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CROSSREFS
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A060074 Comment.
Sequence in context: A006658 A006293 A132618 this_sequence A163793 A076455 A000362
Adjacent sequences: A060077 A060078 A060079 this_sequence A060081 A060082 A060083
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KEYWORD
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nonn
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Mar 16 2001
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