A168445 - cp's OEIS frontend

A168445 Number of compositions a(1),...,a(k) of n, for some k, such that a(i+1) <= a(i) + 1 for 1 <= i < k and a(1) <= a(k) + 1.

n	a(n)
1	1
2	2
3	4
4	6
5	11
6	18
7	31
8	52
9	91
10	155
11	268
12	464
13	802
14	1390
15	2411
16	4178
17	7249
18	12578
19	21823
20	37870
21	65724
22	114061
23	197960
24	343578
25	596317
26	1034983
27	1796359
28	3117837
29	5411478
30	9392460
31	16302081
32	28294850
33	49110242
34	85238716
35	147945552
36	256783448
37	445689300

[1, 2, 4, 6, 11, 18, 31, 52, 91, 155, 268, 464, 802, 1390, 2411, 4178, 7249, 12578, 21823, 37870, 65724, 114061, 197960, 343578, 596317, 1034983, 1796359, 3117837, 5411478, 9392460, 16302081, 28294850, 49110242, 85238716, 147945552, 256783448, 445689300]

cp's OEIS Frontend

A168445 Number of compositions a(1),...,a(k) of n, for some k, such that a(i+1) <= a(i) + 1 for 1 <= i < k and a(1) <= a(k) + 1.

Table of values

List of values