A239551 - cp's OEIS frontend

A239551 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-1,0,1}.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	6
7	9
8	13
9	18
10	24
11	34
12	49
13	71
14	100
15	145
16	205
17	295
18	423
19	610
20	872
21	1260
22	1804
23	2599
24	3733
25	5381
26	7725
27	11131
28	15996
29	23042
30	33133
31	47714
32	68608
33	98793
34	142101
35	204585
36	294318
37	423683
38	609565
39	877457
40	1262508
41	1817205
42	2614832
43	3763553
44	5415668

[1, 1, 1, 2, 3, 4, 6, 9, 13, 18, 24, 34, 49, 71, 100, 145, 205, 295, 423, 610, 872, 1260, 1804, 2599, 3733, 5381, 7725, 11131, 15996, 23042, 33133, 47714, 68608, 98793, 142101, 204585, 294318, 423683, 609565, 877457, 1262508, 1817205, 2614832, 3763553, 5415668]

cp's OEIS Frontend

A239551 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-1,0,1}.

Table of values

List of values