Logarithmic derivative of A005169, the number of fountains of n coins.

Terms

a(0) =1a(1) =1a(2) =4a(3) =5a(4) =11a(5) =22a(6) =36a(7) =69a(8) =121a(9) =221a(10) =386a(11) =686a(12) =1210a(13) =2122a(14) =3734a(15) =6517a(16) =11408a(17) =19903a(18) =34714a(19) =60485a(20) =105312a(21) =183272a(22) =318758a(23) =554262a(24) =963361a(25) =1674076a(26) =2908426a(27) =5052066a(28) =8774386a(29) =15237482