A026085 - cp's OEIS frontend

A026085 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) = 2. Also a(n) = T(n,n-2), where T is the array defined in A026082.

n	a(n)
4	4
5	8
6	27
7	76
8	226
9	660
10	1939
11	5688
12	16704
13	49072
14	144254
15	424296
16	1248728
17	3677184
18	10834416
19	31939584
20	94205772
21	277997400
22	820747275
23	2424232956
24	7163519202
25	21176638868
26	62626464319
27	185276853192
28	548326714720
29	1623325361424

[4, 8, 27, 76, 226, 660, 1939, 5688, 16704, 49072, 144254, 424296, 1248728, 3677184, 10834416, 31939584, 94205772, 277997400, 820747275, 2424232956, 7163519202, 21176638868, 62626464319, 185276853192, 548326714720, 1623325361424]

cp's OEIS Frontend

A026085 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) = 2. Also a(n) = T(n,n-2), where T is the array defined in A026082.

Table of values

List of values