Number of (s(0), s(1), ..., s(n)) such that 0 < s(i) < 6 and |s(i) - s(i-1)| <= 1 for i = 1,2,...,n, s(0) = 2, s(n) = 2.
A094297
Number of (s(0), s(1), ..., s(n)) such that 0 < s(i) < 6 and |s(i) - s(i-1)| <= 1 for i = 1,2,...,n, s(0) = 2, s(n) = 2.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =18a(4) =46a(5) =120a(6) =316a(7) =840a(8) =2248a(9) =6048a(10) =16336a(11) =44256a(12) =120160a(13) =326784a(14) =889792a(15) =2424960a(16) =6613120a(17) =18043392a(18) =49247488a(19) =134450688a(20) =367134208a(21) =1002645504a(22) =2738510848a(23) =7480215552a(24) =20433258496a(25) =55818559488a(26) =152486858752
External references
- oeis: A094297