a(n) is the number of terms in row n of the array A378303.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =9a(6) =14a(7) =21a(8) =31a(9) =48a(10) =71a(11) =105a(12) =159a(13) =237a(14) =358a(15) =538a(16) =808a(17) =1212a(18) =1821a(19) =2731a(20) =4098a(21) =6148a(22) =9221a(23) =13829a(24) =20742a(25) =31107a(26) =46672a(27) =70004a(28) =104968a(29) =157463