A038570 - cp's OEIS frontend

A038570 Second derivative of n.

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

[0, 0, 0, 0, 1, 0, 0, 0, 2, 3, 0, 1, 1, 0, 0, 0, 4, 5, 6, 7, 1, 0, 3, 2, 2, 3, 0, 1, 1, 0, 0, 0, 8, 9, 10, 11, 13, 12, 15, 14, 2, 3, 0, 1, 7, 6, 5, 4, 4, 5, 6, 7, 1, 0, 3, 2, 2, 3, 0, 1, 1, 0, 0, 0, 16, 17, 18, 19, 21, 20, 23, 22, 26, 27, 24, 25, 31, 30, 29, 28, 4, 5, 6, 7, 1, 0, 3, 2, 14, 15, 12]

cp's OEIS Frontend

A038570 Second derivative of n.

Table of values

List of values

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

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

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