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 A067616 #16 Aug 05 2024 12:46:04
%S A067616 1,7,3,1,1,4,57,2,3,1,5,1,3,1,2,3,9,1,2,9,3,1,18,7,1,2,6,2,1,35,2,1,5,
%T A067616 84,3,2,7,1,1,1,28,2,1,2,1,2,3,1,2,19,1,17,1,1,8,4,3,1,81,7,1,154,24,
%U A067616 1,65,7,3,5,94,7,1,1,8,32,3,1,1,1,3,8,2,2,2,1,5,1,2,1,1,1,7,1,5,1,3,2
%N A067616 Continued fraction expansion for Sum_{k>=1} 1/(2^k-1)^2.
%H A067616 Harry J. Smith, <a href="/A067616/b067616.txt">Table of n, a(n) for n = 0..1999</a>
%e A067616 1.137338736344196596696913368... = 1 + 1/(7 + 1/(3 + 1/(1 + 1/(1 + ...))))
%o A067616 (PARI) { default(realprecision, 2400); x=contfrac(x=suminf(k=1, 1/(2^k - 1)^2)); for (n=1, 2000, write("b078075.txt", n-1, " ", x[n])) } /* Harry J. Smith, Oct 19 2009 */
%Y A067616 Cf. A065443 (decimal expansion).
%K A067616 nonn,cofr
%O A067616 0,2
%A A067616 _Frank Ellermann_, Feb 23 2002
%E A067616 Offset changed by _Andrew Howroyd_, Aug 05 2024