A318748 - cp's OEIS frontend

A318748 Number of integer compositions of n that have only one part or whose consecutive parts are coprime and the last and first part are also coprime.

n	a(n)
0	1
1	1
2	2
3	4
4	7
5	13
6	24
7	43
8	82
9	151
10	285
11	535
12	1005
13	1883
14	3533
15	6631
16	12460
17	23407
18	43952
19	82538
20	154999
21	291088
22	546674
23	1026687
24	1928118
25	3621017
26	6800300
27	12771086
28	23984329
29	45042959
30	84591339
31	158863807
32	298348613
33	560303342
34	1052258402
35	1976157510

[1, 1, 2, 4, 7, 13, 24, 43, 82, 151, 285, 535, 1005, 1883, 3533, 6631, 12460, 23407, 43952, 82538, 154999, 291088, 546674, 1026687, 1928118, 3621017, 6800300, 12771086, 23984329, 45042959, 84591339, 158863807, 298348613, 560303342, 1052258402, 1976157510]

cp's OEIS Frontend

A318748 Number of integer compositions of n that have only one part or whose consecutive parts are coprime and the last and first part are also coprime.

Table of values

List of values