Matrix square of partition triangle A008284.

Terms

a(0) =1a(1) =2a(2) =1a(3) =3a(4) =2a(5) =1a(6) =5a(7) =5a(8) =2a(9) =1a(10) =7a(11) =8a(12) =5a(13) =2a(14) =1a(15) =11a(16) =15a(17) =10a(18) =5a(19) =2a(20) =1a(21) =15a(22) =23a(23) =18a(24) =10a(25) =5a(26) =2a(27) =1a(28) =22a(29) =38