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 A172282 #9 Sep 26 2024 11:16:39 %S A172282 1,4,36,1,900,1,1764,1,900,1,4356,1,7452900,1,36,1,260100,1,636804,1, %T A172282 108900,1,19044,1,7452900,1,36,1,756900,1,205119684,1,260100,1,36,1, %U A172282 3683290256100,1,36,1,183060900,1,3261636,1,476100,1,79524,1,2153888100,1,4356,1,2528100 %N A172282 Squares of Bernoulli number denominators A027642. %C A172282 Compare the sequence for example with A120083. %H A172282 Antti Karttunen, <a href="/A172282/b172282.txt">Table of n, a(n) for n = 0..4096</a> %F A172282 a(n) = A027642(n)^2 . %t A172282 Denominator[BernoulliB[Range[0,60]]]^2 (* _Harvey P. Dale_, Sep 26 2024 *) %o A172282 (PARI) A172282(n) = (denominator(bernfrac(n))^2); \\ _Antti Karttunen_, Dec 19 2018 %Y A172282 Cf. A120083, A172298. %K A172282 nonn,easy %O A172282 0,2 %A A172282 _Paul Curtz_, Jan 30 2010 %E A172282 Edited and extended by _R. J. Mathar_, Feb 02 2010