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A134712
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Base-2 logarithm of (n-th even superperfect number divided by 2^n).
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0
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0, 0, 1, 2, 7, 10, 11, 22, 51, 78, 95, 114, 507, 592, 1263, 2186, 2263, 3198, 4233, 4402, 9667, 9918, 11189, 19912, 21675, 23182, 44469, 86214, 110473, 132018, 216059, 756806, 859399, 1257752, 1398233, 2976184, 3021339, 6972554, 13466877
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OFFSET
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1,4
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LINKS
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FORMULA
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EXAMPLE
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a(5)=7 because the 5th even superperfect number is 4096, 2^5=32, 4096/32=128 and log_2(128) = 7 (because 2^7=128).
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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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