A147806 - cp's OEIS frontend

A147806 Partial sums of A147809(n) = tau(n^2 + 1)/2 - 1.

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	4
8	5
9	6
10	6
11	7
12	8
13	11
14	11
15	12
16	12
17	15
18	17
19	18
20	18
21	21
22	22
23	25
24	25
25	26
26	26
27	29
28	30
29	31
30	32
31	35
32	37
33	40
34	41
35	42
36	42
37	45
38	47
39	48
40	48
41	50
42	51
43	56
44	57
45	58
46	59
47	66
48	67
49	68
50	69
51	70
52	71
53	74
54	74
55	77
56	77
57	84
58	85
59	86
60	87
61	88
62	89
63	92
64	93
65	94
66	94
67	97
68	100
69	101
70	103
71	104
72	107

[0, 0, 1, 1, 2, 2, 4, 5, 6, 6, 7, 8, 11, 11, 12, 12, 15, 17, 18, 18, 21, 22, 25, 25, 26, 26, 29, 30, 31, 32, 35, 37, 40, 41, 42, 42, 45, 47, 48, 48, 50, 51, 56, 57, 58, 59, 66, 67, 68, 69, 70, 71, 74, 74, 77, 77, 84, 85, 86, 87, 88, 89, 92, 93, 94, 94, 97, 100, 101, 103, 104, 107]

cp's OEIS Frontend

A147806 Partial sums of A147809(n) = tau(n^2 + 1)/2 - 1.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	4
8	5
9	6
10	6
11	7
12	8
13	11
14	11
15	12
16	12
17	15
18	17
19	18
20	18
21	21
22	22
23	25
24	25
25	26
26	26
27	29
28	30
29	31
30	32
31	35
32	37
33	40
34	41
35	42
36	42
37	45
38	47
39	48
40	48
41	50
42	51
43	56
44	57
45	58
46	59
47	66
48	67
49	68
50	69
51	70
52	71
53	74
54	74
55	77
56	77
57	84
58	85
59	86
60	87
61	88
62	89
63	92
64	93
65	94
66	94
67	97
68	100
69	101
70	103
71	104
72	107

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	4
8	5
9	6
10	6
11	7
12	8
13	11
14	11
15	12
16	12
17	15
18	17
19	18
20	18
21	21
22	22
23	25
24	25
25	26
26	26
27	29
28	30
29	31
30	32
31	35
32	37
33	40
34	41
35	42
36	42
37	45
38	47
39	48
40	48
41	50
42	51
43	56
44	57
45	58
46	59
47	66
48	67
49	68
50	69
51	70
52	71
53	74
54	74
55	77
56	77
57	84
58	85
59	86
60	87
61	88
62	89
63	92
64	93
65	94
66	94
67	97
68	100
69	101
70	103
71	104
72	107

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	4
8	5
9	6
10	6
11	7
12	8
13	11
14	11
15	12
16	12
17	15
18	17
19	18
20	18
21	21
22	22
23	25
24	25
25	26
26	26
27	29
28	30
29	31
30	32
31	35
32	37
33	40
34	41
35	42
36	42
37	45
38	47
39	48
40	48
41	50
42	51
43	56
44	57
45	58
46	59
47	66
48	67
49	68
50	69
51	70
52	71
53	74
54	74
55	77
56	77
57	84
58	85
59	86
60	87
61	88
62	89
63	92
64	93
65	94
66	94
67	97
68	100
69	101
70	103
71	104
72	107