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 A034879 #13 Jul 25 2015 20:18:38 %S A034879 3,6,720,10080,40320,288,3251404800,33443020800,10032906240, %T A034879 150493593600,1179600089304268800000, %U A034879 6494947622660923209343932825600000000,817033558319976619871285124179533435912396304547840000000000000 %N A034879 a(n) = product of factorials of digits of a(n-1). %C A034879 The next term has 110 digits. - _Harvey P. Dale_, Oct 17 2011 %F A034879 a(n+1) = A066459(a(n)), a(1) = 3. - _Reinhard Zumkeller_, Oct 11 2011 %t A034879 NestList[Times@@(IntegerDigits[#]!)&,3,12] (* _Harvey P. Dale_, Oct 17 2011 *) %o A034879 (Haskell) %o A034879 a034879 n = a034879_list !! (n-1) %o A034879 a034879_list = iterate a066459 3 -- _Reinhard Zumkeller_, Oct 11 2011 %K A034879 nonn,base,nice %O A034879 1,1 %A A034879 _Erich Friedman_ %E A034879 a(13) from _Harvey P. Dale_, Oct 17 2011