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 A057984 #5 Mar 30 2012 18:34:55 %S A057984 0,1,2,8,78,349,383,13932,30452,252992198,364873753,850627701, %T A057984 914514429,17493745212,471008431072,1027221839335,14568535208344 %N A057984 These numbers are the record number of steps for the numbers in A057983 to reach the top of the deck in Guy's shuffle (see A035485). %C A057984 See A057983 for the numbers that take these number of steps to reach the top of the deck. Gale gives a(12) as 21879255397 (incorrect). %D A057984 D. Gale, Tracking the Automatic Ant and Other Mathematical Explorations, Springer, 1998, chapter 5. %D A057984 D. Gale, Mathematical Entertainments: "Careful Card-Shuffling and Cutting Can Create Chaos," The Mathematical Intelligencer, vol. 14, no. 1, 1992, pages 54-56. %e A057984 In Guy's shuffle, 4 takes 8 shuffles to reach the top, no smaller number takes more shuffles, so 8 is in the sequence. %Y A057984 Cf. A035485, A035490, A035493, A035494, A057983, A060750-A060752. %Y A057984 A057984 = A035490(A057983). %K A057984 hard,nonn %O A057984 0,3 %A A057984 _Jud McCranie_, Oct 24 2000