A225526 - cp's OEIS frontend

A225526 Number of distinct products i*j over all pairs (i,j) with |i| + |j| <= n and gcd(i,j) <= 1.

n	a(n)
0	1
1	1
2	3
3	5
4	7
5	11
6	13
7	17
8	21
9	27
10	31
11	39
12	43
13	51
14	57
15	63
16	69
17	81
18	87
19	99
20	107
21	117
22	125
23	139
24	147
25	159
26	169
27	183
28	195
29	215
30	223
31	241
32	257
33	273
34	287
35	305
36	315
37	339
38	353
39	371
40	383
41	407
42	419
43	443
44	461
45	479
46	497
47	523
48	539
49	567
50	585

[1, 1, 3, 5, 7, 11, 13, 17, 21, 27, 31, 39, 43, 51, 57, 63, 69, 81, 87, 99, 107, 117, 125, 139, 147, 159, 169, 183, 195, 215, 223, 241, 257, 273, 287, 305, 315, 339, 353, 371, 383, 407, 419, 443, 461, 479, 497, 523, 539, 567, 585]

cp's OEIS Frontend

A225526 Number of distinct products i*j over all pairs (i,j) with |i| + |j| <= n and gcd(i,j) <= 1.

Table of values

List of values

n	a(n)
0	1
1	1
2	3
3	5
4	7
5	11
6	13
7	17
8	21
9	27
10	31
11	39
12	43
13	51
14	57
15	63
16	69
17	81
18	87
19	99
20	107
21	117
22	125
23	139
24	147
25	159
26	169
27	183
28	195
29	215
30	223
31	241
32	257
33	273
34	287
35	305
36	315
37	339
38	353
39	371
40	383
41	407
42	419
43	443
44	461
45	479
46	497
47	523
48	539
49	567
50	585

n	a(n)
0	1
1	1
2	3
3	5
4	7
5	11
6	13
7	17
8	21
9	27
10	31
11	39
12	43
13	51
14	57
15	63
16	69
17	81
18	87
19	99
20	107
21	117
22	125
23	139
24	147
25	159
26	169
27	183
28	195
29	215
30	223
31	241
32	257
33	273
34	287
35	305
36	315
37	339
38	353
39	371
40	383
41	407
42	419
43	443
44	461
45	479
46	497
47	523
48	539
49	567
50	585

n	a(n)
0	1
1	1
2	3
3	5
4	7
5	11
6	13
7	17
8	21
9	27
10	31
11	39
12	43
13	51
14	57
15	63
16	69
17	81
18	87
19	99
20	107
21	117
22	125
23	139
24	147
25	159
26	169
27	183
28	195
29	215
30	223
31	241
32	257
33	273
34	287
35	305
36	315
37	339
38	353
39	371
40	383
41	407
42	419
43	443
44	461
45	479
46	497
47	523
48	539
49	567
50	585