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A128092
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a(n) = largest multiple of n which is <= 2^n.
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3
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2, 4, 6, 16, 30, 60, 126, 256, 504, 1020, 2046, 4092, 8190, 16380, 32760, 65536, 131070, 262134, 524286, 1048560, 2097144, 4194300, 8388606, 16777200, 33554425, 67108860, 134217702, 268435440, 536870910, 1073741820, 2147483646
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = n*floor(2^n/n) = n*A000799(n).
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MAPLE
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a:=n->n*floor(2^n/n): seq(a(n), n=1..37); # Emeric Deutsch, Feb 16 2007
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MATHEMATICA
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f[n_] := n*Floor[2^n/n]; Array[f, 33] (* Ray Chandler, Feb 19 2007 *)
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PROG
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(Python)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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