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 A005498 M4146 #41 Nov 23 2024 14:27:45
%S A005498 1,6,21,88,330,1302,5005,19504,75582,294140,1144066,4458192,17383860,
%T A005498 67866918,265182525,1037169760,4059928950,15905412468,62359143990,
%U A005498 244662838160,960566918220,3773656396796,14833897694226,58343359313568,229591913401900,903936171565752,3560597348629860
%N A005498 Triangulations of the disk G_{2,n}.
%D A005498 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A005498 Andrew Howroyd, <a href="/A005498/b005498.txt">Table of n, a(n) for n = 0..500</a>
%H A005498 Jean-François Alcover, <a href="/A005498/a005498.txt">Mathematica program</a>
%H A005498 William G. Brown, <a href="http://dx.doi.org/10.1112/plms/s3-14.4.746">Enumeration of Triangulations of the Disk</a>, Proc. Lond. Math. Soc. s3-14 (1964) 746-768.
%H A005498 William G. Brown, <a href="/A002709/a002709.pdf">Enumeration of Triangulations of the Disk</a>, Proc. Lond. Math. Soc. s3-14 (1964) 746-768. [Annotated scanned copy]
%p A005498 A005498 := proc(n)
%p A005498 BrownG(2,n) ;
%p A005498 end proc: # take BrownG from A210696
%p A005498 seq(A005498(n),n=0..25) ; # _R. J. Mathar_, Mar 30 2012
%t A005498 (* See links *)
%Y A005498 Row n=2 of A262586.
%K A005498 nonn
%O A005498 0,2
%A A005498 _N. J. A. Sloane_
%E A005498 More terms from _R. J. Mathar_, Mar 30 2012
%E A005498 a(25) onwards from _Andrew Howroyd_, Nov 23 2024