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 A092795 #17 May 24 2025 17:57:24
%S A092795 1,67,1993,43891,836521,14764627,249723433,4123297651,67157947561,
%T A092795 1085384064787,17464790421673,280328391247411,4493290901135401,
%U A092795 71964955947764947,1152089156508284713,18439265231953981171,295080697103288816041,4721762414918959913107
%N A092795 Number of connected relations.
%H A092795 G. C. Greubel, <a href="/A092795/b092795.txt">Table of n, a(n) for n = 1..825</a>
%H A092795 G. Kilibarda and V. Jovovic, <a href="https://arxiv.org/abs/1411.4187">Enumeration of some classes of T_0-hypergraphs</a>, arXiv:1411.4187 [math.CO], 2014.
%H A092795 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (43,-701,5477,-20658,30240).
%F A092795 a(n) = 16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n.
%F A092795 G.f.: x*(318*x^3+187*x^2-24*x-1) / ((5*x-1)*(6*x-1)*(7*x-1)*(9*x-1)*(16*x-1)). - _Colin Barker_, Jul 13 2013
%t A092795 Table[16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n, {n, 1, 50}] (* _G. C. Greubel_, Oct 08 2017 *)
%t A092795 LinearRecurrence[{43,-701,5477,-20658,30240},{1,67,1993,43891,836521},20] (* _Harvey P. Dale_, May 24 2025 *)
%o A092795 (PARI) for(n=1,50, print1(16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n, ", ")) \\ _G. C. Greubel_, Oct 08 2017
%o A092795 (Magma) [16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n: n in [1..50]]; // _G. C. Greubel_, Oct 08 2017
%Y A092795 Cf. A005333, A001047, A002501, A002502, A093732, A093733.
%K A092795 nonn,easy
%O A092795 1,2
%A A092795 Goran Kilibarda, _Vladeta Jovovic_, Apr 15 2004
%E A092795 More terms from _Colin Barker_, Jul 13 2013