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#18 by Michael De Vlieger at Tue May 03 14:37:49 EDT 2022
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#17 by Antti Karttunen at Tue May 03 05:23:06 EDT 2022
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#16 by Antti Karttunen at Tue May 03 05:21:56 EDT 2022
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| COMMENTS
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If k is present in the sequencebsequence, then also 2*k and A000265(k) are present also.
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#15 by Antti Karttunen at Tue May 03 05:21:25 EDT 2022
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#14 by Antti Karttunen at Tue May 03 04:26:01 EDT 2022
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#13 by Antti Karttunen at Tue May 03 04:25:51 EDT 2022
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| PROG
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(PARI) isA353456(n) = if(issquarefree(n=(n>>valuation(n, 2))), 0, my(f=factor(n)); for(k=1, #f~, if((f[k, 2]%4)>1, return(0))); (1)); \\ After _Álvar hisIbeas_'s Nov 28 2017 comment in A209635 by _Álvar Ibeas_
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| STATUS
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proposed
editing
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#12 by Antti Karttunen at Tue May 03 04:21:54 EDT 2022
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#11 by Antti Karttunen at Tue May 03 04:21:29 EDT 2022
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| NAME
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Numbers k such that A353627(k) <> ) is less than A353628(k).
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| STATUS
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proposed
editing
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#10 by Antti Karttunen at Tue May 03 04:16:20 EDT 2022
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#9 by Antti Karttunen at Tue May 03 04:11:57 EDT 2022
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| PROG
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(PARI) isA353456(n) = if(issquarefree(n=(n>>valuation(n, 2))), 0, my(f=factor(n)); for(k=1, #f~, if((f[k, 2]%4)>1, return(0))); (1)); \\ After thehis Nov 28 2017 comment in A209635 by _Álvar Ibeas_ in A209635._
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