A173028 - cp's OEIS frontend

A173028 Partition of the row numbers of the Wythoff array W: two numbers are in the same row if and only if their rows in W have (essentially) a common divisor greater than 1.

n	a(n)
1	1
2	3
3	2
4	4
5	9
6	6
7	5
8	13
9	29
10	7
11	16
12	45
13	43
14	35
15	8
16	19
17	56
18	57
19	52
20	15
21	10
22	22
23	67
24	186
25	181
26	58
27	51
28	11
29	25
30	78
31	223
32	226
33	77
34	199
35	55
36	12
37	28
38	89
39	260
40	271
41	96
42	265
43	82
44	61
45	14
46	31
47	262
48	297
49	316
50	115
51	331
52	109
53	91
54	71
55	17
56	34
57	291
58	334
59	361
60	351
61	397
62	136
63	317
64	106
65	87
66	18

[1, 3, 2, 4, 9, 6, 5, 13, 29, 7, 16, 45, 43, 35, 8, 19, 56, 57, 52, 15, 10, 22, 67, 186, 181, 58, 51, 11, 25, 78, 223, 226, 77, 199, 55, 12, 28, 89, 260, 271, 96, 265, 82, 61, 14, 31, 262, 297, 316, 115, 331, 109, 91, 71, 17, 34, 291, 334, 361, 351, 397, 136, 317, 106, 87, 18]

cp's OEIS Frontend

A173028 Partition of the row numbers of the Wythoff array W: two numbers are in the same row if and only if their rows in W have (essentially) a common divisor greater than 1.

Table of values

List of values

n	a(n)
1	1
2	3
3	2
4	4
5	9
6	6
7	5
8	13
9	29
10	7
11	16
12	45
13	43
14	35
15	8
16	19
17	56
18	57
19	52
20	15
21	10
22	22
23	67
24	186
25	181
26	58
27	51
28	11
29	25
30	78
31	223
32	226
33	77
34	199
35	55
36	12
37	28
38	89
39	260
40	271
41	96
42	265
43	82
44	61
45	14
46	31
47	262
48	297
49	316
50	115
51	331
52	109
53	91
54	71
55	17
56	34
57	291
58	334
59	361
60	351
61	397
62	136
63	317
64	106
65	87
66	18

n	a(n)
1	1
2	3
3	2
4	4
5	9
6	6
7	5
8	13
9	29
10	7
11	16
12	45
13	43
14	35
15	8
16	19
17	56
18	57
19	52
20	15
21	10
22	22
23	67
24	186
25	181
26	58
27	51
28	11
29	25
30	78
31	223
32	226
33	77
34	199
35	55
36	12
37	28
38	89
39	260
40	271
41	96
42	265
43	82
44	61
45	14
46	31
47	262
48	297
49	316
50	115
51	331
52	109
53	91
54	71
55	17
56	34
57	291
58	334
59	361
60	351
61	397
62	136
63	317
64	106
65	87
66	18

n	a(n)
1	1
2	3
3	2
4	4
5	9
6	6
7	5
8	13
9	29
10	7
11	16
12	45
13	43
14	35
15	8
16	19
17	56
18	57
19	52
20	15
21	10
22	22
23	67
24	186
25	181
26	58
27	51
28	11
29	25
30	78
31	223
32	226
33	77
34	199
35	55
36	12
37	28
38	89
39	260
40	271
41	96
42	265
43	82
44	61
45	14
46	31
47	262
48	297
49	316
50	115
51	331
52	109
53	91
54	71
55	17
56	34
57	291
58	334
59	361
60	351
61	397
62	136
63	317
64	106
65	87
66	18