%I #7 Apr 19 2021 02:19:33
%S 1,1,2,4,9,28,86,319,1265
%N Sum of columns 1 and 2 of triangle in A343168.
%Y Cf. A343463, A343464, A343162-A343168.
%K nonn,more
%O 1,3
%A _N. J. A. Sloane_, Apr 19 2021, based on an email from _Don Knuth_
