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A366656
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Number of divisors of 8^n+1.
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9
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2, 3, 4, 8, 4, 12, 16, 12, 8, 20, 48, 24, 16, 12, 64, 64, 8, 48, 64, 24, 16, 64, 64, 24, 32, 96, 768, 192, 32, 24, 1536, 24, 8, 256, 512, 1536, 64, 96, 256, 64, 64, 96, 1024, 48, 128, 1280, 256, 96, 128, 96, 8192, 1024, 32, 48, 1024, 2304, 256, 192, 256, 192
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OFFSET
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0,1
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LINKS
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FORMULA
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EXAMPLE
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a(4)=4 because 8^4+1 has divisors {1, 17, 241, 4097}.
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MAPLE
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a:=n->numtheory[tau](8^n+1):
seq(a(n), n=0..100);
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MATHEMATICA
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PROG
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(PARI) a(n) = numdiv(8^n+1);
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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