A025047 - cp's OEIS frontend

A025047 Number of alternating compositions, i.e., compositions with alternating increases and decreases, starting with either an increase or a decrease.

n	a(n)
0	1
1	1
2	1
3	3
4	4
5	7
6	12
7	19
8	29
9	48
10	75
11	118
12	186
13	293
14	460
15	725
16	1139
17	1789
18	2814
19	4422
20	6949
21	10924
22	17168
23	26979
24	42404
25	66644
26	104737
27	164610
28	258707
29	406588
30	639009
31	1004287
32	1578363
33	2480606
34	3898599
35	6127152
36	9629623
37	15134213
38	23785388
39	37381849
40	58750468

[1, 1, 1, 3, 4, 7, 12, 19, 29, 48, 75, 118, 186, 293, 460, 725, 1139, 1789, 2814, 4422, 6949, 10924, 17168, 26979, 42404, 66644, 104737, 164610, 258707, 406588, 639009, 1004287, 1578363, 2480606, 3898599, 6127152, 9629623, 15134213, 23785388, 37381849, 58750468]

cp's OEIS Frontend

A025047 Number of alternating compositions, i.e., compositions with alternating increases and decreases, starting with either an increase or a decrease.

Table of values

List of values