A225529 - cp's OEIS frontend

A225529 Number of distinct products i*j over all pairs (i,j) with i,j >= 0 and i+j <= n and gcd(i,j) <= 1.

n	a(n)
0	1
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	11
9	14
10	16
11	20
12	22
13	26
14	29
15	32
16	35
17	41
18	44
19	50
20	54
21	59
22	63
23	70
24	74
25	80
26	85
27	92
28	98
29	108
30	112
31	121
32	129
33	137
34	144
35	153
36	158
37	170
38	177
39	186
40	192
41	204
42	210
43	222
44	231
45	240
46	249
47	262
48	270
49	284
50	293
51	305
52	315
53	331
54	340
55	353

[1, 1, 2, 3, 4, 6, 7, 9, 11, 14, 16, 20, 22, 26, 29, 32, 35, 41, 44, 50, 54, 59, 63, 70, 74, 80, 85, 92, 98, 108, 112, 121, 129, 137, 144, 153, 158, 170, 177, 186, 192, 204, 210, 222, 231, 240, 249, 262, 270, 284, 293, 305, 315, 331, 340, 353]

cp's OEIS Frontend

A225529 Number of distinct products i*j over all pairs (i,j) with i,j >= 0 and i+j <= n and gcd(i,j) <= 1.

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	11
9	14
10	16
11	20
12	22
13	26
14	29
15	32
16	35
17	41
18	44
19	50
20	54
21	59
22	63
23	70
24	74
25	80
26	85
27	92
28	98
29	108
30	112
31	121
32	129
33	137
34	144
35	153
36	158
37	170
38	177
39	186
40	192
41	204
42	210
43	222
44	231
45	240
46	249
47	262
48	270
49	284
50	293
51	305
52	315
53	331
54	340
55	353

n	a(n)
0	1
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	11
9	14
10	16
11	20
12	22
13	26
14	29
15	32
16	35
17	41
18	44
19	50
20	54
21	59
22	63
23	70
24	74
25	80
26	85
27	92
28	98
29	108
30	112
31	121
32	129
33	137
34	144
35	153
36	158
37	170
38	177
39	186
40	192
41	204
42	210
43	222
44	231
45	240
46	249
47	262
48	270
49	284
50	293
51	305
52	315
53	331
54	340
55	353

n	a(n)
0	1
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	11
9	14
10	16
11	20
12	22
13	26
14	29
15	32
16	35
17	41
18	44
19	50
20	54
21	59
22	63
23	70
24	74
25	80
26	85
27	92
28	98
29	108
30	112
31	121
32	129
33	137
34	144
35	153
36	158
37	170
38	177
39	186
40	192
41	204
42	210
43	222
44	231
45	240
46	249
47	262
48	270
49	284
50	293
51	305
52	315
53	331
54	340
55	353