3-wave sequence starting with 1, 1, 1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =5a(6) =6a(7) =11a(8) =14a(9) =25a(10) =31a(11) =56a(12) =70a(13) =126a(14) =157a(15) =283a(16) =353a(17) =636a(18) =793a(19) =1429a(20) =1782a(21) =3211a(22) =4004a(23) =7215a(24) =8997a(25) =16212a(26) =20216a(27) =36428a(28) =45425a(29) =81853