a(n) = a(n-1) + a(n-6), with a(i) = 1 for i = 0..5.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =3a(8) =4a(9) =5a(10) =6a(11) =7a(12) =9a(13) =12a(14) =16a(15) =21a(16) =27a(17) =34a(18) =43a(19) =55a(20) =71a(21) =92a(22) =119a(23) =153a(24) =196a(25) =251a(26) =322a(27) =414a(28) =533a(29) =686