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 A080347 #33 Mar 02 2024 14:11:35 %S A080347 1,7,41,80,219,313,1579,4250,32327,96057,203774,321975,394664,1430433, %T A080347 5886828,9140809,35697590,101647281,453696237 %N A080347 Number of shuffles in Guy's shuffle (A035485) corresponding to the terms in A080346. %C A080347 Card #1 being at the top before the first shuffle is not counted. The card at the top is in A080346. Card 170 reaches the top for the 15th time after 5886828 shuffles and for the 16th time after 9140809 shuffles, so a(15) <= 5886828 and a(16) <= 9140809. %e A080347 Card #14 is the first card to reach the top position 3 times after 41 shuffles and it is the first card to do so, so a(3)=41. %o A080347 (Python) # See program in A080346 %Y A080347 Cf. A035485, A057976, A080346. %K A080347 hard,more,nonn %O A080347 1,2 %A A080347 _Jud McCranie_, Feb 16 2003, revised Mar 08 2003 %E A080347 a(2) and a(9) corrected by _Michael S. Branicky_, Feb 01 2021 %E A080347 a(15)-a(16) from _Frank A. Stevenson_, Feb 04 2024 %E A080347 a(17)-a(19) from _Frank A. Stevenson_, Feb 09 2024