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Search: id:A113624
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| A113624 |
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Highly composite numbers containing only composite digits (0,4,6,8,9). |
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+0
1
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| 4, 6, 8, 9, 40, 48, 49, 60, 64, 80, 84, 90, 96, 98, 400, 448, 480, 486, 490, 600, 640, 648, 686, 800, 840, 864, 896, 900, 960, 980, 4000, 4096, 4480, 4608, 4800, 4860, 4900, 6000, 6048, 6400, 6480, 6804, 6860, 8000, 8064, 8400, 8640, 8960, 9000, 9408, 9600
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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96 is a term as 96 = 2^5*3 and contains digits 9,6 both composite. 96 is a member of A002473.
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MATHEMATICA
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Select[Select[Range[2, 10000], FactorInteger[ # ][[ -1]][[1]] <= 7 &], DigitCount[ # ][[1]]+DigitCount[ # ][[2]]+DigitCount[ # ][[3]]+DigitCount[ # ][[5]]+ DigitCount[ # ][[7]] == 0 &] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 11 2006
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CROSSREFS
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Cf. A002473, A113623.
Sequence in context: A099071 A073866 A001744 this_sequence A113591 A029581 A076612
Adjacent sequences: A113621 A113622 A113623 this_sequence A113625 A113626 A113627
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 10 2005
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 11 2006
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