Floor-Sqrt transform of Riordan numbers (A005043).

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =2a(6) =3a(7) =6a(8) =9a(9) =15a(10) =24a(11) =39a(12) =64a(13) =106a(14) =174a(15) =288a(16) =476a(17) =791a(18) =1315a(19) =2192a(20) =3659a(21) =6120a(22) =10251a(23) =17195a(24) =28880a(25) =48565a(26) =81760a(27) =137786a(28) =232427a(29) =392429