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 A213148 #13 Jul 26 2025 14:37:36 %S A213148 1,-5,-20,370,6880,-84080,-4764320,13835920,5296238080,57709630720, %T A213148 -8215749893120,-267412364065280,15638020342497280, %U A213148 1127961849051627520,-29166891598121553920,-5249813654826672404480 %N A213148 Polylogarithm li(-n,-5/9) multiplied by (14^(n+1))/9. %C A213148 See the sequence A212846 which describes the general case of li(-n,-p/q). This sequence is obtained for p=5,q=9. %H A213148 Stanislav Sykora, <a href="/A213148/b213148.txt">Table of n, a(n) for n = 0..100</a> %F A213148 See formula in A212846, setting p=5,q=9. %e A213148 polylog(-5,-5/9)*14^6/9 = -84080. %t A213148 p = 5; 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 A213148 (PARI) \\ in A212846; run limnpq(nmax, 5, 9) %Y A213148 Cf. A212846, A210246, A212847, A213127 to A213147. %Y A213148 Cf. A213149 to A213157. %K A213148 sign %O A213148 0,2 %A A213148 _Stanislav Sykora_, Jun 06 2012