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A058634
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a(n) = floor(b(n)), where b(n) = 1/cos(b(n-1)), b(0) = 1.
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0
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1, 1, -4, -2, 2, -2, 9, -2, 1, -4, -2, 1, -4, -2, 1, -4, -2, 1, -3, -2, 1, -3, -2, 1, -4, -2, 1, -4, -2, 2, -2, 12, 1, 1, -4, -2, 1, -3, -2, 2, -2, 8, -3, -2, -6, 1, 16, -3, -2, 7, -12, 1, -4, -2, 2, -3, -3, -3, -2, -6, 1, 2, -2, 2, -3, -2, -6, 1, 4, -3, -2, 9, -2, 2, -3, -2, -4, -2, 1, -3, -2, 1, -3, -2, 2, -3, -2, -7, 1, 4, -2, 70, 4, -2, 27
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OFFSET
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0,3
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LINKS
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EXAMPLE
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a(3) = -2 because: b(0) = 1, b(1) = 1/cos(1) = 1.850815..., b(2) = 1/cos(1.850815) = -3.618291..., b(3) = 1/cos(-3.618291) = -1.125468... and a(3) = floor(b(3)) = -2
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PROG
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(PARI) default(realprecision, 1000); b=1; for(n=0, 94, print1(floor(b)", "); b=1/cos(b))
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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Avi Peretz (njk(AT)netvision.net.il), Dec 26 2000
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EXTENSIONS
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STATUS
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approved
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