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 A159383 #12 Jun 02 2025 01:33:34 %S A159383 12,1584,152688,13648200,846679356,32762864904,779081474880, %T A159383 12381739674840,143119261158300,1283949949655736,9379210663695600, %U A159383 57819891720389760,309087991429311276,1463326913027026800 %N A159383 Number of n X n arrays of squares of integers summing to 11. %C A159383 All such sequences have holonomic recurrences (cf. comment in A159359). - _Georg Fischer_, Feb 17 2022 %H A159383 R. H. Hardin, <a href="/A159383/b159383.txt">Table of n, a(n) for n=2..100</a> %H A159383 <a href="/index/Rec#order_23">Index entries for linear recurrences with constant coefficients</a>, signature (23, -253, 1771, -8855, 33649, -100947, 245157, -490314, 817190, -1144066, 1352078, -1352078, 1144066, -817190, 490314, -245157, 100947, -33649, 8855, -1771, 253, -23, 1). %F A159383 Empirical G.f.: -12*x^2*(1+x)*(1 + 108*x + 9833*x^2 + 866490*x^3 + 46525328*x^4 + 1327261872*x^5 + 16745609840*x^6 + 97277340534*x^7 + 275802359702*x^8 + 390874554984*x^9 + 275802359702*x^10 + 97277340534*x^11 + 16745609840*x^12 + 1327261872*x^13 + 46525328*x^14 + 866490*x^15 + 9833*x^16 + 108*x^17 + x^18)/(-1+x)^23. - _Vaclav Kotesovec_, Nov 30 2012 %K A159383 nonn %O A159383 2,1 %A A159383 _R. H. Hardin_ Apr 11 2009