A094821 - cp's OEIS frontend

A094821 Number of (s(0), s(1), ..., s(2n)) such that 0 < s(i) < 8 and |s(i) - s(i-1)| = 1 for i = 1,2,...,2n, s(0) = 3, s(2n) = 5.

n	a(n)
1	1
2	4
3	15
4	54
5	190
6	660
7	2276
8	7816
9	26776
10	91600
11	313104
12	1069728
13	3653728
14	12477504
15	42606656
16	145479808
17	496722304
18	1695962368
19	5790470400
20	19770087936
21	67499673088
22	230459040768
23	786837865472
24	2686435477504

[1, 4, 15, 54, 190, 660, 2276, 7816, 26776, 91600, 313104, 1069728, 3653728, 12477504, 42606656, 145479808, 496722304, 1695962368, 5790470400, 19770087936, 67499673088, 230459040768, 786837865472, 2686435477504]

cp's OEIS Frontend

A094821 Number of (s(0), s(1), ..., s(2n)) such that 0 < s(i) < 8 and |s(i) - s(i-1)| = 1 for i = 1,2,...,2n, s(0) = 3, s(2n) = 5.

Table of values

List of values