A026922 - cp's OEIS frontend

A026922 Number of partitions of n into an odd number of parts, the greatest being 2; also, a(n+3) = number of partitions of n+1 into an even number of parts, each <=2.

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	2
12	3
13	3
14	4
15	3
16	4
17	4
18	5
19	4
20	5
21	5
22	6
23	5
24	6
25	6
26	7
27	6
28	7
29	7
30	8
31	7
32	8
33	8
34	9
35	8
36	9
37	9
38	10
39	9
40	10
41	10
42	11
43	10
44	11
45	11
46	12
47	11
48	12
49	12
50	13
51	12
52	13
53	13
54	14
55	13
56	14
57	14
58	15
59	14
60	15
61	15
62	16
63	15
64	16
65	16
66	17
67	16
68	17
69	17
70	18
71	17
72	18
73	18
74	19
75	18
76	19
77	19
78	20
79	19
80	20
81	20
82	21

[0, 1, 0, 1, 1, 2, 1, 2, 2, 3, 2, 3, 3, 4, 3, 4, 4, 5, 4, 5, 5, 6, 5, 6, 6, 7, 6, 7, 7, 8, 7, 8, 8, 9, 8, 9, 9, 10, 9, 10, 10, 11, 10, 11, 11, 12, 11, 12, 12, 13, 12, 13, 13, 14, 13, 14, 14, 15, 14, 15, 15, 16, 15, 16, 16, 17, 16, 17, 17, 18, 17, 18, 18, 19, 18, 19, 19, 20, 19, 20, 20, 21]

cp's OEIS Frontend

A026922 Number of partitions of n into an odd number of parts, the greatest being 2; also, a(n+3) = number of partitions of n+1 into an even number of parts, each <=2.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	2
12	3
13	3
14	4
15	3
16	4
17	4
18	5
19	4
20	5
21	5
22	6
23	5
24	6
25	6
26	7
27	6
28	7
29	7
30	8
31	7
32	8
33	8
34	9
35	8
36	9
37	9
38	10
39	9
40	10
41	10
42	11
43	10
44	11
45	11
46	12
47	11
48	12
49	12
50	13
51	12
52	13
53	13
54	14
55	13
56	14
57	14
58	15
59	14
60	15
61	15
62	16
63	15
64	16
65	16
66	17
67	16
68	17
69	17
70	18
71	17
72	18
73	18
74	19
75	18
76	19
77	19
78	20
79	19
80	20
81	20
82	21

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	2
12	3
13	3
14	4
15	3
16	4
17	4
18	5
19	4
20	5
21	5
22	6
23	5
24	6
25	6
26	7
27	6
28	7
29	7
30	8
31	7
32	8
33	8
34	9
35	8
36	9
37	9
38	10
39	9
40	10
41	10
42	11
43	10
44	11
45	11
46	12
47	11
48	12
49	12
50	13
51	12
52	13
53	13
54	14
55	13
56	14
57	14
58	15
59	14
60	15
61	15
62	16
63	15
64	16
65	16
66	17
67	16
68	17
69	17
70	18
71	17
72	18
73	18
74	19
75	18
76	19
77	19
78	20
79	19
80	20
81	20
82	21

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	2
7	1
8	2
9	2
10	3
11	2
12	3
13	3
14	4
15	3
16	4
17	4
18	5
19	4
20	5
21	5
22	6
23	5
24	6
25	6
26	7
27	6
28	7
29	7
30	8
31	7
32	8
33	8
34	9
35	8
36	9
37	9
38	10
39	9
40	10
41	10
42	11
43	10
44	11
45	11
46	12
47	11
48	12
49	12
50	13
51	12
52	13
53	13
54	14
55	13
56	14
57	14
58	15
59	14
60	15
61	15
62	16
63	15
64	16
65	16
66	17
67	16
68	17
69	17
70	18
71	17
72	18
73	18
74	19
75	18
76	19
77	19
78	20
79	19
80	20
81	20
82	21