Number of distinct terms in row n of triangle A230871.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =10a(6) =20a(7) =35a(8) =74a(9) =130a(10) =258a(11) =473a(12) =1007a(13) =1830a(14) =3912a(15) =7093a(16) =15233a(17) =27831a(18) =60458a(19) =109555a(20) =239039a(21) =433654a(22) =946849a(23) =1709524a(24) =3746021a(25) =6750928