Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #30 Nov 12 2020 05:16:53
%S 1,3,8,15,29,48,80,121,182,260,367,497,673,886,1158,1477,1875,2341,
%T 2913,3570,4355,5258,6323,7526,8933,10515,12338,14373,16697,19282,
%U 22214,25448,29084,33089,37561,42449,47885,53817,60370,67489,75316,83794,93084,103106
%N (Number of 4 X 4 pandiagonal magic squares with distinct positive entries less than n)/384.
%H L. Ng, <a href="http://math.sfsu.edu/beck/teach/masters/louis.pdf">Magic Counting with Inside-Out Polytopes</a>, San Francisco State University, 2018.
%F G.f.: x^17*(1 + x)*(1 + 2*x + 6*x^2 + 8*x^3 + 17*x^4 + 20*x^5 + 36*x^6 + 38*x^7 + 58*x^8 + 57*x^9 + 76*x^10 + 68*x^11 + 84*x^12 + 70*x^13 + 81*x^14 + 57*x^15 + 59*x^16 + 34*x^17 + 38*x^18 + 16*x^19 + 14*x^20)/((1 - x^3)*(1 - x^4)*(1 - x^6)*(1 - x^7)*(1 - x^8)*(1 - x^10)).
%K nonn
%O 17,2
%A _Louis Ng_, Aug 13 2018