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 A213408 N0026 #6 Jun 10 2012 18:36:34 %S A213408 1,1,1,2,1,1,2,2,1,2,1,2,3,2,2,1,2,1,2,2,2,2,1,3,2,2,2,2,1,4,2,1,2,2, %T A213408 2,1,2,4,2,2,2,1,3,2,2,2,2,2,2,2,1,2,4,1,4,2,2,1,4,2,2,2,2,2,2,1,2,3, %U A213408 4,2,2,2,2,4,2,2,1,2,3,2,4,2,2,2,4,3,2,2,2,2,2,2,1,2,2,4,1,2,4,2,4,2,2,2,2,2,1,3,4,2,2,2,2 %N A213408 Sequence A002654 with the zero terms omitted. %D A213408 J. W. L. Glaisher, On the function which denotes the difference between the number of (4m+1)-divisors and the number of (4m+3)-divisors of a number, Proc. London Math. Soc., 15 (1884), 104-122. See Table on page 106. %D A213408 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %Y A213408 Cf. A002654. %K A213408 nonn %O A213408 1,4 %A A213408 _N. J. A. Sloane_, Jun 10 2012