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A066867
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Numbers n such that 2^n has 7 as its fourth decimal digit from the right.
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0
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21, 24, 27, 32, 40, 46, 56, 62, 73, 85, 94, 141, 157, 164, 170, 175, 183, 188, 216, 228, 234, 237, 261, 265, 268, 293, 300, 317, 331, 339, 349, 355, 359, 369, 376, 379, 386, 403, 410, 430, 442, 447, 451, 454, 458, 463, 472, 495, 498
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| A sequence of no importance apart from the reference, which attributes the solution of this to John von Neumann, beating a computer to the solution.
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REFERENCES
| Sylvia Nasar, A Beautiful Mind (1998), p. 80.
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MATHEMATICA
| Select[ Range[ 10, 500 ], IntegerDigits[ 2^# ][ [ -4 ] ] == 7 & ]
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CROSSREFS
| Sequence in context: A095437 A089787 A157676 * A111356 A033267 A186402
Adjacent sequences: A066864 A066865 A066866 * A066868 A066869 A066870
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KEYWORD
| nonn,base
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AUTHOR
| Harvey P. Dale (hpd1(AT)nyu.edu), Jan 21 2002
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