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Search: id:A065731
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| A065731 |
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Greatest perfect square that does not exceed n!. |
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+0
3
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| 1, 1, 1, 4, 16, 100, 676, 4900, 40000, 362404, 3625216, 39904489, 478996996, 6226945921, 87177877081, 1307672296225, 20922784184449, 355687416544329, 6402373660047556, 121645099966283776, 2432902006216007824
(list; graph; listen)
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OFFSET
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0,4
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,100
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FORMULA
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a(n) = floor(sqrt(n!))^2
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PROGRAM
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(PARI) { for (n=0, 100, a=sqrtint(n!)^2; write("b065731.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 28 2009]
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CROSSREFS
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a(n)=A048760[A000142(n)]
Cf. A048760, A000142, A065730-A065741
Sequence in context: A145823 A121142 A087296 this_sequence A074187 A111883 A094637
Adjacent sequences: A065728 A065729 A065730 this_sequence A065732 A065733 A065734
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KEYWORD
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easy,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Nov 15 2001
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EXTENSIONS
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OFFSET changed from 1,4 to 0,4 by Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 28 2009
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