Number of length n+7 0..2 arrays with at most one downstep in every n consecutive neighbor pairs.

Terms

a(0) =6561a(1) =14849a(2) =19338a(3) =23463a(4) =29147a(5) =38010a(6) =49611a(7) =63075a(8) =78552a(9) =96210a(10) =116236a(11) =138837a(12) =164241a(13) =192698a(14) =224481a(15) =259887a(16) =299238a(17) =342882a(18) =391194a(19) =444577a(20) =503463a(21) =568314a(22) =639623a(23) =717915a(24) =803748a(25) =897714a(26) =1000440a(27) =1112589a(28) =1234861a(29) =1367994