A096572 - cp's OEIS frontend

A096572 Number of compositions of n with first part 4 and no equal adjacent parts; this is column 4 of the array in A096568.

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	1
7	3
8	3
9	6
10	13
11	20
12	36
13	65
14	111
15	194
16	342
17	596
18	1041
19	1830
20	3200
21	5593
22	9802
23	17148
24	30002
25	52537
26	91940
27	160897
28	281646
29	492933
30	862718
31	1510022
32	2642890
33	4625626
34	8096054
35	14170051
36	24800873
37	43407658
38	75973898
39	132972414

[0, 0, 0, 1, 1, 1, 3, 3, 6, 13, 20, 36, 65, 111, 194, 342, 596, 1041, 1830, 3200, 5593, 9802, 17148, 30002, 52537, 91940, 160897, 281646, 492933, 862718, 1510022, 2642890, 4625626, 8096054, 14170051, 24800873, 43407658, 75973898, 132972414]

cp's OEIS Frontend

A096572 Number of compositions of n with first part 4 and no equal adjacent parts; this is column 4 of the array in A096568.

Table of values

List of values