A380389 - cp's OEIS frontend

A380389 Array read by ascending antidiagonals: A(n, k) is equal to n/k if k | n, else to the concatenation of the numerator and the denominator of n/k.

n	a(n)
1	1
2	2
3	12
4	3
5	1
6	13
7	4
8	32
9	23
10	14
11	5
12	2
13	1
14	12
15	15
16	6
17	52
18	43
19	34
20	25
21	16
22	7
23	3
24	53
25	1
26	35
27	13
28	17
29	8
30	72
31	2
32	54
33	45
34	12
35	27
36	18
37	9
38	4
39	73
40	32
41	1
42	23
43	37
44	14
45	19
46	10
47	92
48	83
49	74
50	65
51	56
52	47
53	38
54	29
55	110
56	11
57	5
58	3
59	2
60	75
61	1
62	57
63	12
64	13
65	15
66	111
67	12
68	112
69	103
70	94
71	85
72	76
73	67
74	58
75	49
76	310
77	211
78	112

[1, 2, 12, 3, 1, 13, 4, 32, 23, 14, 5, 2, 1, 12, 15, 6, 52, 43, 34, 25, 16, 7, 3, 53, 1, 35, 13, 17, 8, 72, 2, 54, 45, 12, 27, 18, 9, 4, 73, 32, 1, 23, 37, 14, 19, 10, 92, 83, 74, 65, 56, 47, 38, 29, 110, 11, 5, 3, 2, 75, 1, 57, 12, 13, 15, 111, 12, 112, 103, 94, 85, 76, 67, 58, 49, 310, 211, 112]

cp's OEIS Frontend

A380389 Array read by ascending antidiagonals: A(n, k) is equal to n/k if k | n, else to the concatenation of the numerator and the denominator of n/k.

Table of values

List of values

n	a(n)
1	1
2	2
3	12
4	3
5	1
6	13
7	4
8	32
9	23
10	14
11	5
12	2
13	1
14	12
15	15
16	6
17	52
18	43
19	34
20	25
21	16
22	7
23	3
24	53
25	1
26	35
27	13
28	17
29	8
30	72
31	2
32	54
33	45
34	12
35	27
36	18
37	9
38	4
39	73
40	32
41	1
42	23
43	37
44	14
45	19
46	10
47	92
48	83
49	74
50	65
51	56
52	47
53	38
54	29
55	110
56	11
57	5
58	3
59	2
60	75
61	1
62	57
63	12
64	13
65	15
66	111
67	12
68	112
69	103
70	94
71	85
72	76
73	67
74	58
75	49
76	310
77	211
78	112

n	a(n)
1	1
2	2
3	12
4	3
5	1
6	13
7	4
8	32
9	23
10	14
11	5
12	2
13	1
14	12
15	15
16	6
17	52
18	43
19	34
20	25
21	16
22	7
23	3
24	53
25	1
26	35
27	13
28	17
29	8
30	72
31	2
32	54
33	45
34	12
35	27
36	18
37	9
38	4
39	73
40	32
41	1
42	23
43	37
44	14
45	19
46	10
47	92
48	83
49	74
50	65
51	56
52	47
53	38
54	29
55	110
56	11
57	5
58	3
59	2
60	75
61	1
62	57
63	12
64	13
65	15
66	111
67	12
68	112
69	103
70	94
71	85
72	76
73	67
74	58
75	49
76	310
77	211
78	112

n	a(n)
1	1
2	2
3	12
4	3
5	1
6	13
7	4
8	32
9	23
10	14
11	5
12	2
13	1
14	12
15	15
16	6
17	52
18	43
19	34
20	25
21	16
22	7
23	3
24	53
25	1
26	35
27	13
28	17
29	8
30	72
31	2
32	54
33	45
34	12
35	27
36	18
37	9
38	4
39	73
40	32
41	1
42	23
43	37
44	14
45	19
46	10
47	92
48	83
49	74
50	65
51	56
52	47
53	38
54	29
55	110
56	11
57	5
58	3
59	2
60	75
61	1
62	57
63	12
64	13
65	15
66	111
67	12
68	112
69	103
70	94
71	85
72	76
73	67
74	58
75	49
76	310
77	211
78	112