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 A051722 #13 Jul 02 2025 16:01:58 %S A051722 -1,-1,-3,-1,0,1,49,8,27,125,121,3,169,49,125,352,289,351,361,125,147, %T A051722 2057,529,152,3125,169,2673,1127,841,1875,12493,128,121,8381,6125,837, %U A051722 2738,3971,8619,1000,1681,1813,35131,1573,3375,21689,2209,4128,26411 %N A051722 Numerators of row 4 of table described in A051714/A051715. %H A051722 M. Kaneko, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL3/KANEKO/AT-kaneko.html">The Akiyama-Tanigawa algorithm for Bernoulli numbers</a>, J. Integer Sequences, 3 (2000), #00.2.9. %e A051722 -1/30 -1/30 -3/140 -1/105 0 ... %Y A051722 Cf. A051723. %K A051722 sign,easy %O A051722 0,3 %A A051722 _N. J. A. Sloane_ %E A051722 More terms from _James Sellers_, Dec 08 1999