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A274990
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a(n) = 2[n](n-2).
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1
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OFFSET
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0,4
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COMMENTS
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x[n]y is the square-bracket notation for hyperoperations.
See A054871 for details and key links.
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LINKS
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EXAMPLE
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a(0) = 2[0]-2 = -1;
a(1) = 2[1]-1 = 1;
a(2) = 2[2]0 = 0;
a(3) = 2[3]1 = 2;
a(4) = 2[4]2 = 4;
a(6) = 2[5]3 = 65536;
a(7) = 2[6]4 = 2[6]2[6]2 = 2[7]3.
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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