Inverse Moebius transform of tetranacci number (A000078).

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =2a(5) =5a(6) =8a(7) =16a(8) =30a(9) =58a(10) =108a(11) =214a(12) =401a(13) =781a(14) =1493a(15) =2888a(16) =5536a(17) =10705a(18) =20569a(19) =39707a(20) =76433a(21) =147420a(22) =283953a(23) =547566a(24) =1055028a(25) =2034029a(26) =3919974a(27) =7556717a(28) =14564533a(29) =28075593