%I #6 Dec 02 2018 08:51:48
%S 1,1,1,2,8,32,132,702,4566,31670,237446,2010626,18782106,187594266,
%T 2009039346,23200862726,286250968646,3740867774726,51734894498790,
%U 756345994706634,11641318110171330,188004200777993570,3180713596572408650,56276908859288339822
%N Number of permutations of [n] in which the length of every increasing run is 0 or 1 (mod 3).
%H Alois P. Heinz, <a href="/A322251/b322251.txt">Table of n, a(n) for n = 0..470</a>
%Y Cf. A317111, A322262.
%K nonn
%O 0,4
%A _Alois P. Heinz_, Nov 30 2018
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