%I #9 Apr 11 2023 13:34:47
%S 0,1,11,56,196,546,1302,2772,5412,9867,17017,28028,44408,68068,101388,
%T 147288,209304,291669,399399,538384,715484,938630,1216930,1560780,
%U 1981980,2493855,3111381,3851316,4732336,5775176,7002776,8440432
%N a(n) = f(n,4) where f is given in A034261.
%Y Cf. A034261.
%K nonn
%O 0,3
%A _Clark Kimberling_
%E Corrected and extended Apr 21 2000 - _N. J. A. Sloane_.