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 A085814 #7 Mar 30 2012 18:39:18 %S A085814 -1,-2,0,-8,12,8,0,-128,252,472,840,1120,2112,128,0,-32768,65532, %T A085814 131000,261528,519648,1029192,1991728,3865664,6825984,13835328, %U A085814 21056128,39611520,20680192,134234112,32768,0,-2147483648,4294967292,8589934456,17179866936,34359709664,68719241112,137436945552 %N A085814 Even entries (A048967) minus the odd entries (A001316) in row n of Pascal's triangle (A007318). %F A085814 a(n) = sum((-1)^binomial(n, i)*binomial(n, i), i=0..n) %F A085814 For n>1, a(2^n-2)=0. - _Benoit Cloitre_, Jun 13 2004 %Y A085814 Cf. A064405. %K A085814 sign %O A085814 0,2 %A A085814 Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Jul 25 2003