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Fixed points of the permutation A125987/A125988.
5

%I #10 Mar 22 2016 04:55:16

%S 0,1,2,3,4,8,9,22,23,47,64,65,86,162,196,197,259,443,501,625,626,1205,

%T 1743,2055,2056,2707,5334,6917,6918,7540,22372,23713,23714,62571,

%U 64277,82499,82500,109605,253759,290511,290512,579423,621466,653479

%N Fixed points of the permutation A125987/A125988.

%C Those i, for which A125987(i)=i, or equivalently A125985(A125985(i))=i. A126299 shows the same fixed points using factorial code as employed in Vaillé's paper.

%H A. Karttunen, <a href="/A126298/b126298.txt">Table of n, a(n) for n = 0..79</a>

%H J. Vaillé, <a href="http://dx.doi.org/10.1006/eujc.1996.0089">Une Bijection Explicative de Plusieurs Propriétés Remarquables des Ponts</a>, European J. Combin. 18 (1997), no. 1, 117-124.

%Y Superset of A126300.

%K nonn

%O 0,3

%A _Antti Karttunen_, Jan 02 2007