A309014 - cp's OEIS frontend

A309014 a(n) = Sum_{k=0..n} (-1)^(n-k) * (Stirling2(n,k) mod 2).

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	2
6	1
7	1
8	2
9	3
10	1
11	2
12	3
13	3
14	2
15	1
16	3
17	4
18	1
19	3
20	4
21	5
22	3
23	2
24	5
25	5
26	2
27	3
28	5
29	4
30	3
31	1
32	4
33	5
34	1
35	4
36	5
37	7
38	4
39	3
40	7
41	8
42	3
43	5
44	8
45	7
46	5
47	2
48	7
49	7
50	2
51	5
52	7
53	8
54	5
55	3
56	8
57	7
58	3
59	4
60	7
61	5
62	4
63	1
64	5
65	6
66	1
67	5
68	6
69	9
70	5
71	4
72	9
73	11
74	4
75	7
76	11
77	10
78	7
79	3
80	10
81	11
82	3
83	8
84	11
85	13
86	8
87	5
88	13
89	12
90	5

[1, 1, 0, 1, 1, 2, 1, 1, 2, 3, 1, 2, 3, 3, 2, 1, 3, 4, 1, 3, 4, 5, 3, 2, 5, 5, 2, 3, 5, 4, 3, 1, 4, 5, 1, 4, 5, 7, 4, 3, 7, 8, 3, 5, 8, 7, 5, 2, 7, 7, 2, 5, 7, 8, 5, 3, 8, 7, 3, 4, 7, 5, 4, 1, 5, 6, 1, 5, 6, 9, 5, 4, 9, 11, 4, 7, 11, 10, 7, 3, 10, 11, 3, 8, 11, 13, 8, 5, 13, 12, 5]

cp's OEIS Frontend

A309014 a(n) = Sum_{k=0..n} (-1)^(n-k) * (Stirling2(n,k) mod 2).

Table of values

List of values

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	2
6	1
7	1
8	2
9	3
10	1
11	2
12	3
13	3
14	2
15	1
16	3
17	4
18	1
19	3
20	4
21	5
22	3
23	2
24	5
25	5
26	2
27	3
28	5
29	4
30	3
31	1
32	4
33	5
34	1
35	4
36	5
37	7
38	4
39	3
40	7
41	8
42	3
43	5
44	8
45	7
46	5
47	2
48	7
49	7
50	2
51	5
52	7
53	8
54	5
55	3
56	8
57	7
58	3
59	4
60	7
61	5
62	4
63	1
64	5
65	6
66	1
67	5
68	6
69	9
70	5
71	4
72	9
73	11
74	4
75	7
76	11
77	10
78	7
79	3
80	10
81	11
82	3
83	8
84	11
85	13
86	8
87	5
88	13
89	12
90	5

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	2
6	1
7	1
8	2
9	3
10	1
11	2
12	3
13	3
14	2
15	1
16	3
17	4
18	1
19	3
20	4
21	5
22	3
23	2
24	5
25	5
26	2
27	3
28	5
29	4
30	3
31	1
32	4
33	5
34	1
35	4
36	5
37	7
38	4
39	3
40	7
41	8
42	3
43	5
44	8
45	7
46	5
47	2
48	7
49	7
50	2
51	5
52	7
53	8
54	5
55	3
56	8
57	7
58	3
59	4
60	7
61	5
62	4
63	1
64	5
65	6
66	1
67	5
68	6
69	9
70	5
71	4
72	9
73	11
74	4
75	7
76	11
77	10
78	7
79	3
80	10
81	11
82	3
83	8
84	11
85	13
86	8
87	5
88	13
89	12
90	5

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	2
6	1
7	1
8	2
9	3
10	1
11	2
12	3
13	3
14	2
15	1
16	3
17	4
18	1
19	3
20	4
21	5
22	3
23	2
24	5
25	5
26	2
27	3
28	5
29	4
30	3
31	1
32	4
33	5
34	1
35	4
36	5
37	7
38	4
39	3
40	7
41	8
42	3
43	5
44	8
45	7
46	5
47	2
48	7
49	7
50	2
51	5
52	7
53	8
54	5
55	3
56	8
57	7
58	3
59	4
60	7
61	5
62	4
63	1
64	5
65	6
66	1
67	5
68	6
69	9
70	5
71	4
72	9
73	11
74	4
75	7
76	11
77	10
78	7
79	3
80	10
81	11
82	3
83	8
84	11
85	13
86	8
87	5
88	13
89	12
90	5