Number of ways to represent n using the binary operator a * b = 2^a + b.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =7a(5) =12a(6) =23a(7) =41a(8) =81a(9) =149a(10) =282a(11) =522a(12) =987a(13) =1843a(14) =3463a(15) =6473a(16) =12160a(17) =22773a(18) =42719a(19) =80025a(20) =150074a(21) =281258a(22) =527320a(23) =988334a(24) =1852849a(25) =3473061a(26) =6510681a(27) =12204139a(28) =22877649a(29) =42884585