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 A163900 #3 Mar 31 2012 13:21:18 %S A163900 0,0,1,1,8,18,5,5,4,2,9,5,2,2,9,9,0,2,1,1,0,0,1,1,4,4,9,1,2,4,5,9,16, %T A163900 10,25,17,16,16,25,9,36,36,49,25,10,4,5,1,10,18,5,5,10,16,17,25,10,20, %U A163900 25,29,36,36,25,49,128,162,113,113,128,128,113,145,100,100,89,113,162 %N A163900 Squared distance between n's location in A054238 array and A163357 array. %H A163900 A. Karttunen, <a href="/A163900/b163900.txt">Table of n, a(n) for n = 0..65535</a> %F A163900 a(n) = A000290(abs(A059906(n)-A059252(n))) + A000290(abs(A059905(n)-A059253(n))). %o A163900 (MIT Scheme:) %o A163900 (define (A163900 n) (+ (A000290 (abs (- (A059906 n) (A059252 n)))) (A000290 (abs (- (A059905 n) (A059253 n)))))) %Y A163900 Positions of zeros: A163901. See also A163898, A163899. %K A163900 nonn %O A163900 0,5 %A A163900 _Antti Karttunen_, Sep 19 2009