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Search: id:A093685
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| A093685 |
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In binary representation: numbers not occurring in their factorial. |
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+0
5
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| 0, 5, 11, 13, 15, 17, 31, 37, 55, 81, 164, 395, 513, 517, 619, 1041, 1287, 1538, 2108, 2116, 2137, 2138, 2282, 2352, 2363, 2432, 2466, 2524, 4278, 4511, 4758, 4766, 4852, 4854, 5136, 5586, 8396, 8463, 8883, 9707, 10351, 16528, 17279, 19469, 21244, 24472
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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A093684(a(n)) = 0, complement of A093686.
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EXAMPLE
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5!=1*2*3*4*5=120 -> '1111000' where '101'=5 is not contained, therefore 5 is a term.
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MATHEMATICA
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f[n_] := ToString[ FromDigits[ IntegerDigits[n, 2]]]; Select[ Range[ 29000], StringPosition[ f[ #! ], f[ # ]] == {} &] (from Robert G. Wilson v Apr 15 2004)
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CROSSREFS
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Cf. A036603, A007088, A000142, A093826.
Sequence in context: A103068 A070369 A104215 this_sequence A020611 A020604 A082554
Adjacent sequences: A093682 A093683 A093684 this_sequence A093686 A093687 A093688
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Apr 10 2004
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 15 2004
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