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List of twin numbers (h, h+1) such that h and h+1 have same antiharmonic mean of the numbers k < h such that gcd(k, h) = 1.
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%I #6 Aug 02 2019 21:31:24

%S 1,2,6,7,10,11,22,23,46,47,58,59,65,66,69,70,77,78,82,83,106,107,129,

%T 130,166,167,178,179,185,186,194,195,210,211,221,222,226,227,237,238,

%U 254,255,262,263,265,266,309,310,321,322,330,331,346,347,358,359,365

%N List of twin numbers (h, h+1) such that h and h+1 have same antiharmonic mean of the numbers k < h such that gcd(k, h) = 1.

%C Antiharmonic mean B(h) of numbers k such that gcd(k, h) = 1 for numbers h >= 1 and k < h = A053818(n) / A023896(n) = A175505(h) / A175506(h). Union of A179875 and A179876.

%Y Cf. A179871, A179872, A179873, A179874, A179875, A179876, A179877, A179878, A179879, A179880, A179882, A179884, A179885, A179886, A179887, A179890, A179891.

%K nonn

%O 1,2

%A _Jaroslav Krizek_, Jul 30 2010, Jul 31 2010