A309255 - cp's OEIS frontend

A309255 a(n) = n + 1 - Sum_{k=0..n} (Stirling1(n,k) mod 2).

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

[0, 1, 1, 2, 3, 4, 3, 4, 7, 8, 7, 8, 9, 10, 7, 8, 15, 16, 15, 16, 17, 18, 15, 16, 21, 22, 19, 20, 21, 22, 15, 16, 31, 32, 31, 32, 33, 34, 31, 32, 37, 38, 35, 36, 37, 38, 31, 32, 45, 46, 43, 44, 45, 46, 39, 40, 49, 50, 43, 44, 45, 46, 31, 32, 63, 64, 63, 64, 65, 66, 63, 64, 69, 70, 67, 68, 69]

cp's OEIS Frontend

A309255 a(n) = n + 1 - Sum_{k=0..n} (Stirling1(n,k) mod 2).

Table of values

List of values

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

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

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