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 A120449 #5 Jan 18 2013 08:27:31 %S A120449 1,11,1,111,2,1,1111,12,2,1,11111,121,21,2,1,111111,212,22,3,2,1, %T A120449 1111111,1212,122,112,3,2,1,11111111,12121,1221,311,31,12,11,1, %U A120449 111111111,21212,2212,231,23,4,3,2,1,1111111111,121212,21221,1231,312 %N A120449 Array by antidiagonals of all primitive Orloj clock striking sequences. %C A120449 This is the sequences of strikes at each hour, represented by concatenation of the digits. The repeating pattern for each row is in A118382. This table eventually contains non-decimal digits. Row 47 is the first one containing a non-decimal digit. %e A120449 The table starts: %e A120449 1 11 111 1111 11111 111111 ... %e A120449 1 2 12 121 212 1212 ... %e A120449 1 2 21 22 122 1221 ... %e A120449 1 2 3 112 311 231 ... %e A120449 1 2 3 31 23 312 ... %Y A120449 Cf. A118382, A117510, rows A000042, A028359, A028355. %K A120449 base,nonn,tabl %O A120449 1,2 %A A120449 _Franklin T. Adams-Watters_, Jul 19 2006