Number of distinct values obtained using n ones and the operations of sum, product and quotient.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =13a(5) =24a(6) =42a(7) =77a(8) =138a(9) =249a(10) =454a(11) =823a(12) =1493a(13) =2719a(14) =4969a(15) =9060a(16) =16588a(17) =30375a(18) =55672a(19) =102330a(20) =188334a(21) =346624a(22) =639280a(23) =1179742a(24) =2178907a(25) =4029060a(26) =7456271a(27) =13806301a(28) =25587417a(29) =47452133