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 A159409 #10 Dec 22 2023 12:44:27 %S A159409 24,8064,5037600,3174009200,1882950151680,899220266678944, %T A159409 309189853885141152,70127950221363153600,10010731525034640878800, %U A159409 907457680142781736880560,54692309643517397134557792,2316866493981973489812610432,72620271578582971583471226760 %N A159409 Number of n X n arrays of squares of integers summing to 22. %C A159409 All such sequences have holonomic recurrences (cf. comment in A159359). - _Georg Fischer_, Feb 17 2022 %H A159409 R. H. Hardin, <a href="/A159409/b159409.txt">Table of n, a(n) for n = 2..100</a> %H A159409 Vaclav Kotesovec, <a href="/A159409/a159409.txt">G.f. for A159409</a> %H A159409 <a href="/index/Rec#order_45">Index entries for linear recurrences with constant coefficients</a>, signature (45, -990, 14190, -148995, 1221759, -8145060, 45379620, -215553195, 886163135, -3190187286, 10150595910, -28760021745, 73006209045, -166871334960, 344867425584, -646626422970, 1103068603890, -1715884494940, 2438362177020, -3169870830126, 3773655750150, -4116715363800, 4116715363800, -3773655750150, 3169870830126, -2438362177020, 1715884494940, -1103068603890, 646626422970, -344867425584, 166871334960, -73006209045, 28760021745, -10150595910, 3190187286, -886163135, 215553195, -45379620, 8145060, -1221759, 148995, -14190, 990, -45, 1). %F A159409 G.f.: see link above. - _Vaclav Kotesovec_, Dec 04 2012 %K A159409 nonn %O A159409 2,1 %A A159409 _R. H. Hardin_, Apr 11 2009