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Showing entries 1-10 | older changes
Self-inverse permutation of natural numbers: replace (with multiplicity) each prime factor A000040(k) with A000040(min+(max-k)) in the prime factorization of n, where min = A055396(n) and max = A061395(n).
#26 by Bruno Berselli at Fri Nov 24 04:32:59 EST 2017
STATUS
#25 by Michael B. Porter at Fri Nov 24 04:21:31 EST 2017
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#24 by Rémy Sigrist at Fri Nov 24 00:23:42 EST 2017
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#23 by Rémy Sigrist at Fri Nov 24 00:23:34 EST 2017
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STATUS
#22 by Rémy Sigrist at Wed Nov 22 14:35:07 EST 2017
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#21 by Rémy Sigrist at Wed Nov 22 14:29:39 EST 2017
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CROSSREFS
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Discussion
Wed Nov 22
14:35
Rémy Sigrist: added fixed points
#20 by Susanna Cuyler at Tue Nov 21 21:35:49 EST 2017
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#19 by Antti Karttunen at Tue Nov 21 09:45:32 EST 2017
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#18 by Antti Karttunen at Tue Nov 21 09:44:22 EST 2017
EXAMPLE
#17 by Antti Karttunen at Tue Nov 21 09:42:26 EST 2017
COMMENTS