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 A000501 #15 Feb 01 2022 01:00:02
%S A000501 1,1,3,10,27,74,201,548,1490,4051,11013,29937,81377,221206,601302,
%T A000501 1634508,4443055,12077476,32829984,89241150,242582597,659407867,
%U A000501 1792456423,4872401723,13244561064,36002449668,97864804714,266024120300,723128532145,1965667148572
%N A000501 a(n) = floor(cosh(n)).
%H A000501 T. D. Noe, <a href="/A000501/b000501.txt">Table of n, a(n) for n = 0..250</a>
%p A000501 f := n->floor(evalf(cosh(n)));
%t A000501 Table[Floor[Cosh[n]], {n, 0, 50}] (* _T. D. Noe_, Jun 20 2012 *)
%Y A000501 Cf. A000471.
%K A000501 nonn
%O A000501 0,3
%A A000501 _N. J. A. Sloane_
%E A000501 Corrected and extended by _Franklin T. Adams-Watters_, Apr 26 2006