A026084 - cp's OEIS frontend

A026084 a(n) = number of (s(0), s(1), ..., s(n)) such that every s(i) is an integer, s(0) = 0, |s(i) - s(i-1)| = 1 for i = 1,2,3; |s(i) - s(i-1)| <= 1 for i >= 4, s(n) = 1. Also a(n) = T(n,n-1), where T is the array defined in A026082.

n	a(n)
4	3
5	13
6	33
7	98
8	278
9	804
10	2320
11	6723
12	19515
13	56769
14	165421
15	482793
16	1411049
17	4129323
18	12098151
19	35482857
20	104169033
21	306087111
22	900134883
23	2649106752
24	7801834068
25	22992061134
26	67799076002
27	200040038589
28	590529542053
29	1744148984223

[3, 13, 33, 98, 278, 804, 2320, 6723, 19515, 56769, 165421, 482793, 1411049, 4129323, 12098151, 35482857, 104169033, 306087111, 900134883, 2649106752, 7801834068, 22992061134, 67799076002, 200040038589, 590529542053, 1744148984223]

cp's OEIS Frontend

A026084 a(n) = number of (s(0), s(1), ..., s(n)) such that every s(i) is an integer, s(0) = 0, |s(i) - s(i-1)| = 1 for i = 1,2,3; |s(i) - s(i-1)| <= 1 for i >= 4, s(n) = 1. Also a(n) = T(n,n-1), where T is the array defined in A026082.

Table of values

List of values