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 A078516 #15 Jul 02 2025 23:39:43 %S A078516 0,10,174,2298,27258,305574,3309444,35022618,364559760,3748221288, %T A078516 38170570414,385768464918,3874673308452,38718126671076, %U A078516 385227806897448,3818752082440794,37735160423265504,371852044352248824,3655440051907792536,35857177310350860328 %N A078516 Sum of balls on the lawn for the s=4 tennis ball problem. %H A078516 D. Merlini, R. Sprugnoli, and M. C. Verri, <a href="https://doi.org/10.1006/jcta.2002.3273">The tennis ball problem</a>, J. Combin. Theory, A 99 (2002), 307-344 (S_n for s=4). %F A078516 a(n) is asymptotic to c*sqrt(n)*(256/27)^n with c=2.8... - _Benoit Cloitre_, Jan 26 2003 %F A078516 a(n) = ( (4*n^2+11*n+8) * A002293(n+1) - A078995(n+1) ) / 2. - _Sean A. Irvine_, Jul 02 2025 %Y A078516 See A049235 for more information. %Y A078516 Cf. A002293, A078995. %K A078516 nonn %O A078516 0,2 %A A078516 _N. J. A. Sloane_, Jan 19 2003