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 A005593 M1414 #27 Apr 13 2022 13:25:17 %S A005593 2,5,12,29,71,177,448,1147,2960,7679,19989,52145,136214,356121,931540, %T A005593 2437513,6379403,16698113,43710756,114427391,299560472,784236315, %U A005593 2053119817,5375076769,14072035466,36840908237,96450492828,252510252437 %N A005593 a(n) = (F(2n+1) + F(2n-1) + F(n+3) - 2)/2, where F() = Fibonacci numbers A000045. %D A005593 M. D. McIlroy, The number of states of a dynamic storage system, Computer J., 25 (No. 3, 1982), 388-392. %D A005593 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A005593 M. D. McIlroy, <a href="/A005207/a005207.pdf">The number of states of a dynamic storage system</a>, Computer J., 25 (No. 3, 1982), 388-392. (Annotated scanned copy) %H A005593 Simon Plouffe, <a href="https://arxiv.org/abs/0911.4975">Approximations de séries génératrices et quelques conjectures</a>, Dissertation, Université du Québec à Montréal, 1992; arXiv:0911.4975 [math.NT], 2009. %H A005593 Simon Plouffe, <a href="/A000051/a000051_2.pdf">1031 Generating Functions</a>, Appendix to Thesis, Montreal, 1992 %p A005593 A005593:=-(-2+5*z-z**2-2*z**3+z**4)/(z-1)/(z**2+z-1)/(z**2-3*z+1); # conjectured by _Simon Plouffe_ in his 1992 dissertation %t A005593 Map[(Fibonacci[2#1+1]+Fibonacci[2#1-1]+Fibonacci[ #1+3]-2)/2&, Range[50]] %K A005593 nonn,easy %O A005593 1,1 %A A005593 _N. J. A. Sloane_ %E A005593 More terms from Gabriel Cunningham (gcasey(AT)mit.edu), Oct 25 2004