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 A236378 #11 Mar 01 2014 14:14:56 %S A236378 0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,8,0,0,12,0,0,0,8,0,12,0,0,0,0,0, %T A236378 4,0,8,16,0,0,16,0,0,24,0,0,28,0,0,0,28,16,0,0,0,24,16,0,4,0,0,0,0,0, %U A236378 36,0,8,8,0,0,12,16,0,32,0,0,24,0,28,32,0,0,64,0,0,48,0,0,48,0,0,56,56,0,60 %N A236378 Difference between n and the result obtained when n is remultiplied from N to GF(2)[X]: a(n) = n - A234741(n). %C A236378 a(n) is the difference of n and the number obtained when the prime divisors of n are multiplied together in such a way that the carry-bits from intermediate products are discarded, as in A048720. %C A236378 All terms are divisible by 4. %H A236378 Antti Karttunen, <a href="/A236378/b236378.txt">Table of n, a(n) for n = 0..8191</a> %Y A236378 Cf. A235034 (gives the positions of zeros). %Y A236378 Cf. A234741, A236379, A236380, A061858. %K A236378 nonn %O A236378 0,10 %A A236378 _Antti Karttunen_, Jan 24 2014