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%I #14 Mar 09 2024 09:52:57
%S 1,1,0,0,0,0,0,0,0,0,0,0,1,64,4352,103680,2644488,48052224,922764744,
%T 15466088448,271484691944,4512300607488,78169637107873,
%U 1332149989277696,23596090882390538
%N The number of down-up permutations of [n] where adjacent elements differ by at least 6.
%Y Cf. A245377 (stride >=2), A249390, A249391, A249392, A179959 (non-alternating).
%K nonn,more
%O 0,14
%A _R. J. Mathar_, Oct 27 2014
%E a(19)-a(20) from _Alois P. Heinz_, Oct 27 2014
%E a(21) from _Alois P. Heinz_, Oct 29 2014
%E a(22)-a(24) from _Max Alekseyev_, Mar 09 2024
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