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 A213144 #12 Jul 26 2025 14:37:58 %S A213144 1,-4,-20,188,5260,-6244,-2601620,-32352772,1819651660,70205109596, %T A213144 -1222831819220,-150917074955332,-1035896603485940,350980640716235036, %U A213144 12868008338514067180,-796662150577236175492 %N A213144 Polylogarithm li(-n,-4/9) multiplied by (13^(n+1))/9. %C A213144 See the sequence A212846 which describes the general case of li(-n,-p/q). This sequence is obtained for p=4,q=9. %H A213144 Stanislav Sykora, <a href="/A213144/b213144.txt">Table of n, a(n) for n = 0..100</a> %F A213144 See formula in A212846, setting p=4,q=9. %e A213144 polylog(-5,-4/9)*13^6/9 = -6244. %t A213144 p = 4; q = 9; f[n_] := PolyLog[-n, -p/q] (p + q)^(n + 1)/q; f[0] = 1; Array[f, 20, 0] (* _Robert G. Wilson v_, Dec 25 2015 *) %o A213144 (PARI) \\ in A212846; run limnpq(nmax, 4, 9) %Y A213144 Cf. A212846, A210246, A212847, A213127 to A213143. %Y A213144 Cf. A213145 to A213157. %K A213144 sign %O A213144 0,2 %A A213144 _Stanislav Sykora_, Jun 06 2012