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Positions of even terms in A275832; indices of those permutations in tables A060117 & A060118 where element 1 is in an even cycle.
5

%I #14 Jun 24 2017 12:05:33

%S 1,4,7,9,11,15,16,17,18,20,21,23,25,28,31,34,37,40,43,46,49,51,53,55,

%T 58,66,68,70,75,76,77,85,88,90,91,92,96,98,99,101,102,104,106,108,109,

%U 110,115,118,121,124,127,129,131,135,136,137,138,140,141,143,145,148,151,153,155,159,160,161,162,164,165,167,169,172,175,177,179

%N Positions of even terms in A275832; indices of those permutations in tables A060117 & A060118 where element 1 is in an even cycle.

%C Equally: positions of even terms in A275726.

%H Antti Karttunen, <a href="/A275834/b275834.txt">Table of n, a(n) for n = 1..10000</a>

%H Indranil Ghosh, <a href="/A275834/a275834.txt">Python program for computing this sequence</a>

%H <a href="/index/Fa#facbase">Index entries for sequences related to factorial base representation</a>

%o (Scheme, with _Antti Karttunen_'s IntSeq-library)

%o (define A275834 (MATCHING-POS 1 1 (lambda (n) (even? (A275832 n)))))

%Y Complement: A275833.

%Y A subsequence of A273670 and A275814.

%Y Cf. A060117, A060118, A275726, A275832.

%K nonn

%O 1,2

%A _Antti Karttunen_, Aug 11 2016