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 A089061 #8 Apr 23 2018 11:37:00
%S A089061 5,7,10,13,17,22,29,39,54,77,113,170,261,407,642,1021,1633,2622,4221,
%T A089061 6807,10990,17757,28705,46418,75077,121447,196474,317869,514289,
%U A089061 832102,1346333,2178375,3524646,5702957,9227537,14930426,24157893
%N A089061 a(0) = 5, a(1) = 7; for n>1, a(n) = a(n-1)+a(n-2)-(2n-2).
%H A089061 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (3,-2,-1,1).
%F A089061 a(n) = Fibonacci(n+1)+2n+4. - _Ralf Stephan_, Feb 24 2004
%t A089061 RecurrenceTable[{a[0]==5,a[1]==7,a[n]==a[n-1]+a[n-2]-(2n-2)},a,{n,40}] (* or *) LinearRecurrence[{3,-2,-1,1},{5,7,10,13},40] (* _Harvey P. Dale_, Apr 23 2018 *)
%Y A089061 Cf. A088981, A000045.
%K A089061 nonn
%O A089061 0,1
%A A089061 _Kurmang. Aziz. Rashid_, Dec 02 2003