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 A070986 #13 Apr 29 2022 12:01:38 %S A070986 1,2,5,9,14,10,15,16,14,20,22,19,33,25,27,31,41,33,52,47,36,54,38,56, %T A070986 50,56,65,68,81,76,77,84,75,80,88,76,90,89,98,89,113,100,110,101,104, %U A070986 103,121,122,131,121,131,127,124,134,127,132,143,131,143,144,161,141 %N A070986 Number of terms in the simple continued fraction for Sum_{k=1..n} 1/k^3. %C A070986 Sum_{k>=1} 1/k^3 = zeta(3) = 1.2020... (A002117). %H A070986 Amiram Eldar, <a href="/A070986/b070986.txt">Table of n, a(n) for n = 1..10000</a> %F A070986 Limit_{n ->infinity} a(n)/n = C = 2.5.... %e A070986 The simple continued fraction for Sum_{k=1..10} 1/k^3 is [1, 5, 16, 135, 1, 5, 2, 3, 2, 1, 1, 1, 3, 3, 16, 1, 2, 1, 1, 2] which contains 20 terms, hence a(10)=20. %t A070986 lcf[f_] := Length[ContinuedFraction[f]]; lcf /@ Accumulate[Table[1/k^3, {k, 1, 100}]] (* _Amiram Eldar_, Apr 29 2022 *) %o A070986 (PARI) for(n=1,100,print1(length(contfrac(sum(i=1,n,1/i^3))),",")) %Y A070986 Cf. A002117, A055573. %K A070986 easy,nonn %O A070986 1,2 %A A070986 _Benoit Cloitre_, May 18 2002