A285089 - cp's OEIS frontend

A285089 Rectangular array by antidiagonals: row n is the ordered sequence of numbers k that minimize |d(n+1-k) - d(k)|, where d(i) are the divisors of n.

n	a(n)
1	1
2	4
3	2
4	9
5	6
6	3
7	16
8	12
9	8
10	10
11	25
12	20
13	15
14	18
15	5
16	36
17	30
18	24
19	28
20	21
21	14
22	49
23	42
24	35
25	40
26	32
27	50
28	7
29	64
30	56
31	48
32	54
33	45
34	66
35	27
36	44
37	81
38	72
39	63
40	70
41	60
42	84
43	55
44	78
45	33
46	100
47	90
48	80
49	88
50	77
51	104
52	91
53	98
54	65
55	22
56	121
57	110
58	99
59	108
60	96
61	126
62	112
63	170
64	105
65	52

[1, 4, 2, 9, 6, 3, 16, 12, 8, 10, 25, 20, 15, 18, 5, 36, 30, 24, 28, 21, 14, 49, 42, 35, 40, 32, 50, 7, 64, 56, 48, 54, 45, 66, 27, 44, 81, 72, 63, 70, 60, 84, 55, 78, 33, 100, 90, 80, 88, 77, 104, 91, 98, 65, 22, 121, 110, 99, 108, 96, 126, 112, 170, 105, 52]

cp's OEIS Frontend

A285089 Rectangular array by antidiagonals: row n is the ordered sequence of numbers k that minimize |d(n+1-k) - d(k)|, where d(i) are the divisors of n.

Table of values

List of values

n	a(n)
1	1
2	4
3	2
4	9
5	6
6	3
7	16
8	12
9	8
10	10
11	25
12	20
13	15
14	18
15	5
16	36
17	30
18	24
19	28
20	21
21	14
22	49
23	42
24	35
25	40
26	32
27	50
28	7
29	64
30	56
31	48
32	54
33	45
34	66
35	27
36	44
37	81
38	72
39	63
40	70
41	60
42	84
43	55
44	78
45	33
46	100
47	90
48	80
49	88
50	77
51	104
52	91
53	98
54	65
55	22
56	121
57	110
58	99
59	108
60	96
61	126
62	112
63	170
64	105
65	52

n	a(n)
1	1
2	4
3	2
4	9
5	6
6	3
7	16
8	12
9	8
10	10
11	25
12	20
13	15
14	18
15	5
16	36
17	30
18	24
19	28
20	21
21	14
22	49
23	42
24	35
25	40
26	32
27	50
28	7
29	64
30	56
31	48
32	54
33	45
34	66
35	27
36	44
37	81
38	72
39	63
40	70
41	60
42	84
43	55
44	78
45	33
46	100
47	90
48	80
49	88
50	77
51	104
52	91
53	98
54	65
55	22
56	121
57	110
58	99
59	108
60	96
61	126
62	112
63	170
64	105
65	52

n	a(n)
1	1
2	4
3	2
4	9
5	6
6	3
7	16
8	12
9	8
10	10
11	25
12	20
13	15
14	18
15	5
16	36
17	30
18	24
19	28
20	21
21	14
22	49
23	42
24	35
25	40
26	32
27	50
28	7
29	64
30	56
31	48
32	54
33	45
34	66
35	27
36	44
37	81
38	72
39	63
40	70
41	60
42	84
43	55
44	78
45	33
46	100
47	90
48	80
49	88
50	77
51	104
52	91
53	98
54	65
55	22
56	121
57	110
58	99
59	108
60	96
61	126
62	112
63	170
64	105
65	52