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 A001492 #19 Aug 16 2020 01:47:46 %S A001492 1,1,1,1,1,1,1,2,1,1,1,3,1,1,1,4,1,1,1,5,1,1,1,6,1,1,1,7,1,1,1,8,1,1, %T A001492 1,9,1,1,1,10,1,1,1,11,1,1,1,12,1,1,1,1,1,1,1,2,1,1,1,3,1,1,1,4,1,1,1, %U A001492 5,1,1,1,6,1,1,1,7,1,1,1,8,1,1,1,9 %N A001492 Clock chimes with a quarter-hour bell. %C A001492 Periodic sequence with period 48. - _Michel Marcus_, Jul 16 2013 %H A001492 John Cerkan, <a href="/A001492/b001492.txt">Table of n, a(n) for n = 0..1000</a> %H A001492 <a href="/index/Rec#order_48">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1). %o A001492 (PARI) a(n)=if((n+1)%4,1,((n+1)/4-1)%12+1) %Y A001492 Cf. A007879, A007884. %K A001492 nonn,easy %O A001492 0,8 %A A001492 _N. J. A. Sloane_