Related to recurrences over rings.

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =10a(5) =14a(6) =21a(7) =22a(8) =27a(9) =32a(10) =42a(11) =48a(12) =59a(13) =70a(14) =85