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 A346320 #9 Jul 13 2021 17:38:50
%S A346320 1,15,175,1820,17913,171465,1619090,15203100,142623624,1340443104,
%T A346320 12641487040,119734858880,1139445627392,10895927375616,
%U A346320 104687442226688,1010398777492480,9793403768723456,95295673342836736,930591031216799744,9116681462478864384
%N A346320 Number of permutations of [n] having five cycles of the form (c1, c2, ..., c_m) where c1 = min_{i>=1} c_i and c_j = min_{i>=j} c_i or c_j = max_{i>=j} c_i.
%H A346320 Alois P. Heinz, <a href="/A346320/b346320.txt">Table of n, a(n) for n = 5..1000</a>
%H A346320 <a href="/index/Rec#order_15">Index entries for linear recurrences with constant coefficients</a>, signature (70, -2240, 43456, -571424, 5393344, -37736448, 199267328, -800498944, 2446126592, -5639102464, 9631809536, -11801133056, 9794617344, -4926210048, 1132462080).
%F A346320 G.f.: (35389440*x^15 -171638784*x^14 +387477504*x^13 -541806592*x^12 +526946304*x^11 -379603968*x^10 +209286000*x^9 -89384640*x^8 +29543056*x^7 -7487228*x^6 +1432429*x^5 -202097*x^4 +20286*x^3 -1365*x^2 +55*x -1)*x^5 / ((10*x-1) *(8*x-1)^2 *(6*x-1)^3 *(4*x-1)^4 *(2*x-1)^5).
%Y A346320 Column k=5 of A344855.
%K A346320 nonn,easy
%O A346320 5,2
%A A346320 _Alois P. Heinz_, Jul 13 2021