|
|
|
|
#18 by Michael De Vlieger at Tue May 03 14:37:49 EDT 2022
|
|
|
|
#17 by Antti Karttunen at Tue May 03 05:23:06 EDT 2022
|
|
|
|
#16 by Antti Karttunen at Tue May 03 05:21:56 EDT 2022
|
| COMMENTS
|
If k is present in the sequencebsequence, then also 2*k and A000265(k) are present also.
|
|
|
|
#15 by Antti Karttunen at Tue May 03 05:21:25 EDT 2022
|
|
|
|
#14 by Antti Karttunen at Tue May 03 04:26:01 EDT 2022
|
|
|
|
#13 by Antti Karttunen at Tue May 03 04:25:51 EDT 2022
|
| PROG
|
(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_
|
| STATUS
|
proposed
editing
|
|
|
|
#12 by Antti Karttunen at Tue May 03 04:21:54 EDT 2022
|
|
|
|
#11 by Antti Karttunen at Tue May 03 04:21:29 EDT 2022
|
| NAME
|
Numbers k such that A353627(k) <> ) is less than A353628(k).
|
| STATUS
|
proposed
editing
|
|
|
|
#10 by Antti Karttunen at Tue May 03 04:16:20 EDT 2022
|
|
|
|
#9 by Antti Karttunen at Tue May 03 04:11:57 EDT 2022
|
| PROG
|
(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._
|
|
|
|