A094826 - cp's OEIS frontend

A094826 Number of (s(0), s(1), ..., s(2n)) such that 0 < s(i) < 9 and |s(i) - s(i-1)| = 1 for i = 1,2,...,2n, s(0) = 1, s(2n) = 3.

n	a(n)
1	1
2	3
3	9
4	28
5	90
6	297
7	1000
8	3417
9	11799
10	41041
11	143472
12	503262
13	1769365
14	6230304
15	21960801
16	77461435
17	273351705
18	964918116
19	3406804786
20	12029917377
21	42483179304
22	150036624217
23	529901048943
24	1871559855009
25	6610286313784

[1, 3, 9, 28, 90, 297, 1000, 3417, 11799, 41041, 143472, 503262, 1769365, 6230304, 21960801, 77461435, 273351705, 964918116, 3406804786, 12029917377, 42483179304, 150036624217, 529901048943, 1871559855009, 6610286313784]

cp's OEIS Frontend

A094826 Number of (s(0), s(1), ..., s(2n)) such that 0 < s(i) < 9 and |s(i) - s(i-1)| = 1 for i = 1,2,...,2n, s(0) = 1, s(2n) = 3.

Table of values

List of values