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 A111583 #5 Mar 13 2015 19:20:39 %S A111583 1,4,14,38,93,202,400,736,1260,2046,3158,4676,6672,9231,12441,16353, %T A111583 21130,26779,33463,41379,50568,61238,73726,88348,104915,124266,146833, %U A111583 172020,200771,233777,270598,310894,356778,407734,462317,523410,591008 %N A111583 G.f.: A(x) = ( G(x)^5 - G(x^5) - 5*x*((1-x^4)/(1-x))/(1-x^5) )/(25*x^2) where G(x) is the g.f. of A110631. %C A111583 A110631 is formed by selecting every 5th term of A083945; surprisingly, the self-convolution 5th power of A110631 is congruent modulo 25 to A083945, which consists entirely of numbers 1 through 5. %Y A111583 Cf. A110631, A083945. %K A111583 nonn %O A111583 0,2 %A A111583 _Paul D. Hanna_, Aug 28 2005