A263995 - cp's OEIS frontend

A263995 Cardinality of the union of the set of sums and the set of products made from pairs of integers from {1..n}.

n	a(n)
1	2
2	4
3	7
4	11
5	15
6	20
7	27
8	32
9	39
10	46
11	56
12	63
13	75
14	83
15	93
16	102
17	118
18	127
19	146
20	156
21	169
22	182
23	204
24	215
25	231
26	245
27	261
28	274
29	302
30	315
31	346
32	361
33	379
34	398
35	418
36	432
37	469
38	489
39	510
40	527
41	567
42	585
43	627
44	647
45	669
46	693
47	739
48	756
49	788
50	810
51	838
52	862
53	914
54	937

[2, 4, 7, 11, 15, 20, 27, 32, 39, 46, 56, 63, 75, 83, 93, 102, 118, 127, 146, 156, 169, 182, 204, 215, 231, 245, 261, 274, 302, 315, 346, 361, 379, 398, 418, 432, 469, 489, 510, 527, 567, 585, 627, 647, 669, 693, 739, 756, 788, 810, 838, 862, 914, 937]

cp's OEIS Frontend

A263995 Cardinality of the union of the set of sums and the set of products made from pairs of integers from {1..n}.

Table of values

List of values

n	a(n)
1	2
2	4
3	7
4	11
5	15
6	20
7	27
8	32
9	39
10	46
11	56
12	63
13	75
14	83
15	93
16	102
17	118
18	127
19	146
20	156
21	169
22	182
23	204
24	215
25	231
26	245
27	261
28	274
29	302
30	315
31	346
32	361
33	379
34	398
35	418
36	432
37	469
38	489
39	510
40	527
41	567
42	585
43	627
44	647
45	669
46	693
47	739
48	756
49	788
50	810
51	838
52	862
53	914
54	937

n	a(n)
1	2
2	4
3	7
4	11
5	15
6	20
7	27
8	32
9	39
10	46
11	56
12	63
13	75
14	83
15	93
16	102
17	118
18	127
19	146
20	156
21	169
22	182
23	204
24	215
25	231
26	245
27	261
28	274
29	302
30	315
31	346
32	361
33	379
34	398
35	418
36	432
37	469
38	489
39	510
40	527
41	567
42	585
43	627
44	647
45	669
46	693
47	739
48	756
49	788
50	810
51	838
52	862
53	914
54	937

n	a(n)
1	2
2	4
3	7
4	11
5	15
6	20
7	27
8	32
9	39
10	46
11	56
12	63
13	75
14	83
15	93
16	102
17	118
18	127
19	146
20	156
21	169
22	182
23	204
24	215
25	231
26	245
27	261
28	274
29	302
30	315
31	346
32	361
33	379
34	398
35	418
36	432
37	469
38	489
39	510
40	527
41	567
42	585
43	627
44	647
45	669
46	693
47	739
48	756
49	788
50	810
51	838
52	862
53	914
54	937