Number of partitions of n into 4 sorts of parts.

Terms

a(0) =1a(1) =4a(2) =20a(3) =84a(4) =356a(5) =1444a(6) =5876a(7) =23604a(8) =94852a(9) =379908a(10) =1521492a(11) =6088148a(12) =24360548a(13) =97451492a(14) =389838708a(15) =1559394356a(16) =6237711300a(17) =24951007620a(18) =99804576340a(19) =399218968084