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 A297787 #23 Oct 08 2023 04:52:46 %S A297787 0,1,7,0,1,9,0,2,3,0,2,9,0,3,7,0,4,7,0,5,9,0,7,3,0,8,9,1,0,7,1,2,7,1, %T A297787 4,9,1,7,3,1,9,9,2,2,7,2,5,7,2,8,9,3,2,3,3,5,9,3,9,7,4,3,7,4,7,9,5,2, %U A297787 3,5,6,9,6,1,7,6,6,7,7,1,9,7,7,3,8,2,9,8,8,7,9,4,8,0,1,0,0,7,4,1,4,0,2,0,8,2 %N A297787 Decimal expansion of 16968017/999^3. %H A297787 John D. Cook, <a href="https://www.johndcook.com/blog/2013/10/12/prime-generating-fractions/">Prime generating fractions</a> %F A297787 Sum_{k>=0} 10^(-3*k-3)*(k^2+k+17) = 16968017/999^3. %e A297787 0.017019023029037047059073089107127149173199227257289... %t A297787 RealDigits[16968017/999^3, 10, 111][[1]] (* or *) %t A297787 RealDigits[ Sum[10^(-3k -3)*(k^2 +k +17), {k, 0, 37}], 10, 111][[1]] (* _Robert G. Wilson v_, Jan 07 2018 *) %Y A297787 Cf. A007635, A272066, A297785, A297786. %K A297787 nonn,cons %O A297787 0,3 %A A297787 _Seiichi Manyama_, Jan 06 2018