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 A202303 #28 Feb 22 2022 09:06:26 %S A202303 0,0,0,0,1,4,16,25,36,144,324,1849,6400,23716,36481,51984,207936, %T A202303 467856,2666689,9229444,34199104,52606009,74960964,299843856, %U A202303 674648676,3845364121,13308852496,49315084900,75857828929,108093658176,432374632704,972842923584,5545012396225,19191356070436,71112318227344,109386936710041,155870980128900,623483920515600,1402838821160100 %N A202303 Drop the last digit of A023110(n). %C A202303 By definition, all the terms are squares. %D A202303 R. K. Guy, Neg and Reg, preprint, Jan 2012. %F A202303 Conjecture: a(n) = 1443*a(n-7)-1443*a(n-14)+a(n-21). - _Colin Barker_, Sep 20 2014 %F A202303 Empirical g.f.: -x^5*(x +1)*(x^16 +3*x^15 +13*x^14 +12*x^13 +312*x^12 -168*x^11 +204*x^10 +202*x^9 +426*x^8 +202*x^7 +204*x^6 +120*x^5 +24*x^4 +12*x^3 +13*x^2 +3*x +1) / ((x -1)*(x^6 +x^5 +x^4 +x^3 +x^2 +x +1)*(x^14 -1442*x^7 +1)). - _Colin Barker_, Sep 20 2014 %Y A202303 Cf. A023110. The square roots are in A031150. %K A202303 nonn,base %O A202303 1,6 %A A202303 _N. J. A. Sloane_, Jan 12 2012 %E A202303 Fourth leading 0 inserted by _Georg Fischer_, Feb 21 2022