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A103676
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Numbers m such that in binary representation m! contains 5!.
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5
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5, 10, 12, 22, 23, 25, 27, 29, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 59, 60, 61, 62, 63, 64, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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Select[Range[100], MemberQ[Partition[IntegerDigits[#!, 2], 7, 1], {1, 1, 1, 1, 0, 0, 0}]&] (* Harvey P. Dale, Apr 09 2012 *)
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PROG
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(PARI) is(n)=n=n!; while(n>119, my(e=valuation(n, 2), e1=valuation((n>>=e)+1, 2)); n>>=e1; if(e>2 && e1>3, return(1))); 2 \\ Charles R Greathouse IV, Apr 07 2013
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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