This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A347578 #19 Sep 08 2021 21:49:53 %S A347578 1,0,1,1,1,2,2,3,3,4,4,5,5,6,6,6,7,8,8,9,10,9,11,11,13,11,15,12,16,15, %T A347578 16,15,18,16,20,17,23,18,24,20,26,22,26,23,31,23,33,26,35,26,39,27,41, %U A347578 32,41,31,46,31,48,34,51,34,54,36,58,40,58,42,64,41 %N A347578 Number of partitions of n into at most 4 prime parts. %F A347578 a(n) = Sum_{k=1..4} A117278(n,k) for n >= 2. - _Alois P. Heinz_, Sep 08 2021 %Y A347578 Cf. A000040, A000607, A071335, A117278, A259194, A347552, A347609, A347610. %K A347578 nonn %O A347578 0,6 %A A347578 _Ilya Gutkovskiy_, Sep 08 2021