A026086 - cp's OEIS frontend

A026086 Number of (s(0), s(1), ..., s(n)) such that 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) = 3; also a(n) = T(n,n-3), where T is the array defined in A026082.

n	a(n)
4	1
5	6
6	16
7	52
8	156
9	475
10	1429
11	4293
12	12853
13	38413
14	114621
15	341639
16	1017407
17	3027909
18	9007017
19	26783331
20	79622595
21	236662764
22	703350798
23	2090179494
24	6211285598
25	18457764317
26	54851312871
27	163009822939
28	484469104651
29	1439956255806

[1, 6, 16, 52, 156, 475, 1429, 4293, 12853, 38413, 114621, 341639, 1017407, 3027909, 9007017, 26783331, 79622595, 236662764, 703350798, 2090179494, 6211285598, 18457764317, 54851312871, 163009822939, 484469104651, 1439956255806]

cp's OEIS Frontend

A026086 Number of (s(0), s(1), ..., s(n)) such that 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) = 3; also a(n) = T(n,n-3), where T is the array defined in A026082.

Table of values

List of values