%I #8 Oct 07 2020 10:26:19
%S 0,1,3,4,8,12,15,21,27,35,42,50
%N Maximal number of flips required to sort a stack of n unburnt pancakes using the big-3 flips.
%H J. Sawada and A. Williams, <a href="http://www.cis.uoguelph.ca/~sawada/papers/pancake_successor.pdf">Successor rules for flipping pancakes and burnt pancakes</a>, Preprint 2015.
%Y Cf. A058986.
%K nonn,more
%O 1,3
%A _N. J. A. Sloane_, Apr 09 2016