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 A079133 #13 Jul 21 2025 21:40:50 %S A079133 0,0,1,0,0,0,0,0,2,0,3,1,0,1,2,1,0,2,1,1,4,2,3,4,4,3,6,4,4,6,8,5,5,4, %T A079133 8,6,5,5,13,7,9,6,7,6,6,6,9,6,9,8,6,7,8,7,10,9,12,10,12,6,11,9,6,12,7, %U A079133 16,21,17,10,21,12,21,14,11,15,17,26,14,14,18,18,19,12,18,16,17,25,17,15,11,15 %N A079133 Number of 6's in n# (n primorial) = 6's in A002110(n). %H A079133 Alois P. Heinz, <a href="/A079133/b079133.txt">Table of n, a(n) for n = 0..10000</a> (999 terms from Vincenzo Librandi) %t A079133 DigitCount[#, 10, 6]&/@Rest[FoldList[Times, 1, Prime[Range[100]]]] (* _Vincenzo Librandi_, Apr 07 2014 *) %o A079133 (PARI) \\ See program in A079099. %Y A079133 Cf. A002110, A079099. %K A079133 nonn,base,easy %O A079133 0,9 %A A079133 _Cino Hilliard_, Feb 03 2003 %E A079133 Offset corrected by _Alois P. Heinz_, Jul 21 2025