Number of 4-dimensional partitions of n up to conjugacy.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =7a(6) =14a(7) =27a(8) =55a(9) =111a(10) =232a(11) =486a(12) =1039a(13) =2226a(14) =4820a(15) =10449a(16) =22727a(17) =49354a(18) =107117a(19) =231774a(20) =500040a(21) =1074476a(22) =2299589a(23) =4899650