A155822 - cp's OEIS frontend

A155822 Number of compositions of n with no part greater than 3 such that no two adjacent parts are equal.

n	a(n)
0	1
1	1
2	1
3	3
4	3
5	4
6	8
7	9
8	12
9	21
10	27
11	37
12	58
13	78
14	109
15	164
16	227
17	319
18	467
19	656
20	928
21	1341
22	1896
23	2689
24	3859
25	5477
26	7782
27	11126
28	15817
29	22496
30	32103
31	45679
32	65003
33	92668
34	131912
35	187777
36	267556
37	380941
38	542363
39	772581
40	1100098
41	1566414
42	2230997

[1, 1, 1, 3, 3, 4, 8, 9, 12, 21, 27, 37, 58, 78, 109, 164, 227, 319, 467, 656, 928, 1341, 1896, 2689, 3859, 5477, 7782, 11126, 15817, 22496, 32103, 45679, 65003, 92668, 131912, 187777, 267556, 380941, 542363, 772581, 1100098, 1566414, 2230997]

cp's OEIS Frontend

A155822 Number of compositions of n with no part greater than 3 such that no two adjacent parts are equal.

Table of values

List of values