This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A179885 #13 May 26 2025 09:54:30 %S A179885 6,7,65,66,69,70,77,78,129,130,185,186,194,195,210,211,221,222,237, %T A179885 238,254,255,309,310,321,322,330,331,365,366,398,399,417,418,437,438, %U A179885 462,463,473,474,482,483,497,498,533,534,546,547,554,555,570,571,573,574,581 %N A179885 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). %F A179885 a(2*n-1) = A179879(n), a(2*n) = A179880(n) = A179879(n) + 1. - _Amiram Eldar_, May 26 2025 %Y A179885 Subsequence of A179883 and A179872. %Y A179885 Cf. A179871, A179873, A179874, A179875, A179876, A179877, A179878, A179879, A179880, A179882, A179884, A179886, A179887, A179890, A179891. %K A179885 nonn %O A179885 1,1 %A A179885 _Jaroslav Krizek_, Jul 30 2010, Jul 31 2010 %E A179885 More terms from _Amiram Eldar_, May 26 2025