a(n) = [ a(n-1)/a(1) + a(n-3)/a(3) + a(n-5)/a(5) + ... ], for n >= 3.

Terms

a(0) =2a(1) =2a(2) =1a(3) =2a(4) =3a(5) =3a(6) =4a(7) =5a(8) =6a(9) =8a(10) =10a(11) =13a(12) =17a(13) =22a(14) =28a(15) =36a(16) =47a(17) =61a(18) =79a(19) =102a(20) =132a(21) =172a(22) =223a(23) =288a(24) =374a(25) =485a(26) =629a(27) =816a(28) =1058a(29) =1372