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%I #21 Aug 03 2020 18:51:49
%S 1,2,8,30,138,620,3060,14910,76650,390852,2063376,10832052,58264668,
%T 312123240,1702423008,9256786110,51036229530,280696824980,
%U 1560925457520,8663089672380,48512836025940,271229902496280,1527733861191720,8593482390429300,48642125421855420,275014629509319000
%N Number of 3D walks of type bcc.
%C See Dershowitz (2017) for precise definition.
%H Nachum Dershowitz, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL20/Dershowitz/dersh3.html">Touchard's Drunkard</a>, Journal of Integer Sequences, Vol. 20 (2017), #17.1.5.
%Y Cf. A000108, A000984, A002212, A002896, A005572, A026375, A064037, A081671, A138547, A145847, A145867, A150500, A202814.
%K nonn,walk
%O 0,2
%A _N. J. A. Sloane_, Apr 09 2018
%E a(12)-a(25) from _Nachum Dershowitz_, Aug 03 2020
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