A239552 - cp's OEIS frontend

A239552 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-2,...,2}.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	7
6	11
7	18
8	32
9	53
10	89
11	152
12	255
13	431
14	733
15	1243
16	2111
17	3583
18	6087
19	10342
20	17564
21	29845
22	50704
23	86150
24	146382
25	248716
26	422618
27	718091
28	1220156
29	2073272
30	3522846
31	5985967
32	10171232
33	17282786
34	29366645
35	49899299
36	84788109
37	144070585
38	244802450

[1, 1, 1, 2, 4, 7, 11, 18, 32, 53, 89, 152, 255, 431, 733, 1243, 2111, 3583, 6087, 10342, 17564, 29845, 50704, 86150, 146382, 248716, 422618, 718091, 1220156, 2073272, 3522846, 5985967, 10171232, 17282786, 29366645, 49899299, 84788109, 144070585, 244802450]

cp's OEIS Frontend

A239552 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-2,...,2}.

Table of values

List of values