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%I #20 Sep 14 2023 12:37:56
%S 1,1,2,3,5,7,11,15,22,30,42,56,77,101,135,175,229,292,375,470,591,733,
%T 905,1103,1343,1615,1938,2309,2726,3211,3758,4379,5069,5865,6716,7694,
%U 8769,9967,11254,12732,14264,16025,17877,19959,22149,24605,27147,30012,33006,36294,39742,43573,47524
%N Number of partitions of n with at most four part sizes.
%F a(n) = Sum_{k=1..4} A116608(n,k).
%o (Python)
%o from sympy.utilities.iterables import partitions
%o def A364793(n): return sum(1 for p in partitions(n) if len(p)<=4) # _Chai Wah Wu_, Sep 14 2023
%Y Cf. A265250, A309058, A364809.
%Y Cf. A116608, A365630.
%K nonn
%O 0,3
%A _Seiichi Manyama_, Sep 14 2023