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 A075303 #6 May 01 2014 02:48:30 %S A075303 0,2,1,5,3,4,6,9,10,7,15,8,21,11,28,14,36,16,45,12,55,22,66,13,78,29, %T A075303 91,17,105,37,120,20,136,46,153,23,171,56,190,18,210,67,231,30,253,79, %U A075303 276,19,300,92,325,38,351,106,378,24,406,121,435,47,465,137,496,27,528 %N A075303 Inverse permutation to A075302. %H A075303 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %p A075303 A075303 := n -> A001477bi(A025480(n), A007814(n+1)); %Y A075303 Inverse permutation: A075302. Cf. also A001477, A007814, A025480. %K A075303 nonn %O A075303 0,2 %A A075303 _Antti Karttunen_, Sep 12 2002