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%I #16 Feb 01 2022 23:56:54
%S 1,2,5,12,28,65,149,341,777,1769,4022,9140,20763,47156,107086,243162,
%T 552128,1253640,2846424,6462827,14673824,33316766,75645245,171751292,
%U 389958283,885393129,2010268490
%N Sum of rows of triangle defined in A001404.
%C Also, limit to which the reflected rows of A001404 converge. - _Ralf Stephan_, Oct 17 2004
%p a[ 0,0 ] := 1; for i from 1 to N do a[ i,0 ] := a[ i-1,0 ]+a[ i-1,1 ]; for j from 1 to i do a[ i,j ] := sum(a[ i-j,t ],t=0..min(j+1,N)) od; od; b[ n ] := sum(a[ n,i ],i=0..n);
%Y Cf. A001404.
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_
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