A342340 - cp's OEIS frontend

A342340 Number of compositions of n where each part after the first is either twice, half, or equal to the prior part.

n	a(n)
0	1
1	1
2	2
3	4
4	6
5	9
6	17
7	24
8	41
9	67
10	109
11	173
12	296
13	469
14	781
15	1284
16	2109
17	3450
18	5713
19	9349
20	15422
21	25351
22	41720
23	68590
24	112982
25	185753
26	305752
27	503041
28	827819
29	1361940
30	2241435
31	3687742
32	6068537
33	9985389
34	16431144
35	27036576
36	44489533
37	73205429
38	120460062
39	198214516
40	326161107

[1, 1, 2, 4, 6, 9, 17, 24, 41, 67, 109, 173, 296, 469, 781, 1284, 2109, 3450, 5713, 9349, 15422, 25351, 41720, 68590, 112982, 185753, 305752, 503041, 827819, 1361940, 2241435, 3687742, 6068537, 9985389, 16431144, 27036576, 44489533, 73205429, 120460062, 198214516, 326161107]

cp's OEIS Frontend

A342340 Number of compositions of n where each part after the first is either twice, half, or equal to the prior part.

Table of values

List of values