A181840 - OEIS

A181840 as a simple table

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

[0,1,0,0,0,3,0,5,5,7,7,9,7,11,11,13,13,15,13,17, 17,19,19,21,19,23,23,25,25,27,23,29,29,31,31,33, 31,35,35,37,37,39,37,41,41,43,43,45,43,47,47,49, 49,51,49,53,53,55,55,57,53,59,59,61,61,63,61,65, 65,67,67,69]

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

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

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