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Second members of "good matches" produced by match-making permutation: a(n) = A266195(1+A266197(n)).
4

%I #14 Jul 10 2017 22:59:14

%S 3,5,6,10,12,20,19,24,35,48,37,69,84,97,134,160,193,164,194,268,320,

%T 385,386,297,387,770,536,641,519,608,771,648,560,594,774,1539,1104,

%U 1542,1105,1031,1160,1072,1161,1552,2120,1061,1548,3074,1043,1120,1097,1290,1600,2240,2309,3136,2569,4168,2185,3104,2192,2062,2320,2055,2313,2210,3084

%N Second members of "good matches" produced by match-making permutation: a(n) = A266195(1+A266197(n)).

%C Note that a number occurs both here and in A265748 if it is a good match both with its precedent and the successor in A266195.

%H Rémy Sigrist, <a href="/A265749/b265749.txt">Table of n, a(n) for n = 1..10000</a> (first 154 terms from Antti Karttunen)

%F a(n) = A266195(1+A266197(n)).

%F Other identities. For all n >= 1:

%F A070939(a(n)) = A070939(A265748(n)). [By definition of "good match" in this context.]

%o (Scheme) (define (A265749 n) (A266195 (+ 1 (A266197 n))))

%Y Cf. A070939, A266195, A266197.

%Y Cf. A265748 (for the first member).

%Y Cf. also A235034, A235035.

%K nonn

%O 1,1

%A _Antti Karttunen_, Dec 26 2015