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 A111584 #5 Mar 12 2015 21:08:13 %S A111584 1,5,23,76,242,622,1527,3218,6464,11752,20368,33492,52492,80282, %T A111584 118073,170602,242147,336135,463260,627797,841613,1125132,1481186, %U A111584 1941049,2526815,3263039,4198666,5341194,6774802,8564045,10712300,13360856 %N A111584 G.f.: A(x) = ( G(x)^7 - G(x^7) - 7*x*((1-x^6)/(1-x))/(1-x^7) )/(49*x^2) where G(x) is the g.f. of A110635. %C A111584 A110635 is formed by selecting every 7th term of A083947; surpringly, the self-convolution 7th power of A110635 is congruent modulo 49 to A083947, which consists entirely of numbers 1 through 7. %Y A111584 Cf. A110635, A083947. %K A111584 nonn %O A111584 0,2 %A A111584 _Paul D. Hanna_, Aug 28 2005