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 A159386 #10 Dec 22 2023 10:43:37 %S A159386 8,1857,232740,26296475,2128426860,110964458710,3533207162352, %T A159386 73077185537370,1067559034014900,11805270721428855,104131103837358468, %U A159386 762072014041423813,4768129728862470880,26106675760931007900,127411116947126838720,562536757736562399012 %N A159386 Number of n X n arrays of squares of integers summing to 12. %C A159386 All such sequences have holonomic recurrences (cf. comment in A159359). - _Georg Fischer_, Feb 17 2022 %H A159386 R. H. Hardin, <a href="/A159386/b159386.txt">Table of n, a(n) for n=2..100</a> %H A159386 <a href="/index/Rec#order_25">Index entries for linear recurrences with constant coefficients</a>, signature (25, -300, 2300, -12650, 53130, -177100, 480700, -1081575, 2042975, -3268760, 4457400, -5200300, 5200300, -4457400, 3268760, -2042975, 1081575, -480700, 177100, -53130, 12650, -2300, 300, -25, 1). %F A159386 Empirical G.f.: -x^2*(1+x)*(8 + 1649*x + 187066*x^2 + 20829609*x^3 + 1515837476*x^4 + 63614656244*x^5 + 1276374119248*x^6 + 12185198155972*x^7 + 58755893406228*x^8 + 149482468806702*x^9 + 204117353324396*x^10 + 149482468806702*x^11 + 58755893406228*x^12 + 12185198155972*x^13 + 1276374119248*x^14 + 63614656244*x^15 + 1515837476*x^16 + 20829609*x^17 + 187066*x^18 + 1649*x^19 + 8*x^20)/(-1+x)^25. - _Vaclav Kotesovec_, Nov 30 2012 %K A159386 nonn %O A159386 2,1 %A A159386 _R. H. Hardin_, Apr 11 2009