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 A335952 #10 May 17 2022 16:12:09 %S A335952 1,1,1,3,3,5,3,105,3,45,105,165,45,273,7,15,231,1785,9,25935,105,3465, %T A335952 1155,2415,315,16575,429,1485,399,435,45,465465,2145,8415,41055,525, %U A335952 1485,10555545,57057,585,105,268345,19635,18723705,15015 %N A335952 Denominators of the Faulhaber polynomials. %C A335952 See A335951 for comments, programs and references. %o A335952 (Python) %o A335952 from math import lcm %o A335952 from sympy import simplify, sqrt, bernoulli %o A335952 from sympy.abc import x %o A335952 def A335952(n): return lcm(*(d.q for d in simplify((bernoulli(2*n,(sqrt(8*x+1)+1)/2)-bernoulli(2*n,1))/(2*n)).as_poly().all_coeffs())) # _Chai Wah Wu_, May 17 2022 %Y A335952 Cf. A335951 (numerators). %K A335952 nonn,frac %O A335952 0,4 %A A335952 _Peter Luschny_, Jul 16 2020