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Search: id:A060722
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| 1, 3, 81, 19683, 43046721, 847288609443, 150094635296999121, 239299329230617529590083, 3433683820292512484657849089281, 443426488243037769948249630619149892803
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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The number of n X n {-1,0,1}-matrices (the same as the number of n X n matrices over GF(3) ).
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MAPLE
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for n from 1 to 15 do printf(`%d, `, 3^(n^2)) od:
with(finance):seq(mul(futurevalue( 3, 2, n), k=0..n), n=-1..10); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 01 2008
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CROSSREFS
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Sequence in context: A060851 A116179 A013732 this_sequence A134799 A055590 A037111
Adjacent sequences: A060719 A060720 A060721 this_sequence A060723 A060724 A060725
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KEYWORD
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nonn,easy
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AUTHOR
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Avi Peretz (njk(AT)netvision.net.il), Apr 21 2001
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Apr 24 2001
a(0) = 1 added by njas, Nov 23 2007
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