Number of numbers in row n of the array at A243855.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =4a(5) =7a(6) =11a(7) =17a(8) =27a(9) =44a(10) =70a(11) =111a(12) =176a(13) =281a(14) =447a(15) =712a(16) =1130a(17) =1797a(18) =2856a(19) =4549a(20) =7233a(21) =11517a(22) =18317a(23) =29163a(24) =46389a(25) =73838a(26) =117503a(27) =187047a(28) =297690a(29) =473909