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 A157865 #16 Mar 22 2021 02:51:14 %S A157865 2,2,1,1,2,1,0,2,0,1,2,1,0,1,1,1,1,1,1,1,1,0,1,0,1,2,1,1,1,0,0,1,1,0, %T A157865 2,0,0,2,0,1,1,1,0,1,1,1,0,1,1,2,0,0,1,0,0,1,1,1,1,1,1,0,1,0,1,1,0,2, %U A157865 0,1,2,0,0,1,0,0,1,1,1,1,0,0,1,0,1,0,1,1,1,1,0,1,0,1,1,1,0,1,0,1,1,0,1,0,1 %N A157865 a(n) is the number of numbers of the form 4n+2 in A082542. %e A157865 There are 2 twos, 2 sixes, 1 ten, 1 fourteen etc. a(6)=0 because the 26 = 4*6+2 is absent in A082542. %Y A157865 Cf. A082542. %K A157865 nonn %O A157865 0,1 %A A157865 _Paul Curtz_, Mar 08 2009 %E A157865 Edited and corrected by _R. J. Mathar_, Mar 15 2009