A052474 - cp's OEIS frontend

A052474 Construct difference array so that (1) first row begins with 1, (2) every row is monotonic increasing, (3) no number appears more than once, (4) smallest number not yet used begins a new row. Sequence gives main diagonal.

n	a(n)
1	1
2	2
3	4
4	7
5	12
6	13
7	14
8	15
9	16
10	18
11	20
12	21
13	22
14	23
15	32
16	35
17	36
18	39
19	42
20	48
21	49
22	50
23	51
24	53
25	54
26	57
27	58
28	59
29	61
30	62
31	64
32	66
33	68
34	76
35	77
36	78
37	80
38	82
39	86
40	87
41	89
42	91
43	92
44	93
45	98
46	103
47	109
48	110
49	118
50	124
51	127
52	128
53	129
54	132
55	133
56	135
57	136
58	139
59	140
60	141
61	142
62	143
63	149

[1, 2, 4, 7, 12, 13, 14, 15, 16, 18, 20, 21, 22, 23, 32, 35, 36, 39, 42, 48, 49, 50, 51, 53, 54, 57, 58, 59, 61, 62, 64, 66, 68, 76, 77, 78, 80, 82, 86, 87, 89, 91, 92, 93, 98, 103, 109, 110, 118, 124, 127, 128, 129, 132, 133, 135, 136, 139, 140, 141, 142, 143, 149]

cp's OEIS Frontend

A052474 Construct difference array so that (1) first row begins with 1, (2) every row is monotonic increasing, (3) no number appears more than once, (4) smallest number not yet used begins a new row. Sequence gives main diagonal.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	7
5	12
6	13
7	14
8	15
9	16
10	18
11	20
12	21
13	22
14	23
15	32
16	35
17	36
18	39
19	42
20	48
21	49
22	50
23	51
24	53
25	54
26	57
27	58
28	59
29	61
30	62
31	64
32	66
33	68
34	76
35	77
36	78
37	80
38	82
39	86
40	87
41	89
42	91
43	92
44	93
45	98
46	103
47	109
48	110
49	118
50	124
51	127
52	128
53	129
54	132
55	133
56	135
57	136
58	139
59	140
60	141
61	142
62	143
63	149

n	a(n)
1	1
2	2
3	4
4	7
5	12
6	13
7	14
8	15
9	16
10	18
11	20
12	21
13	22
14	23
15	32
16	35
17	36
18	39
19	42
20	48
21	49
22	50
23	51
24	53
25	54
26	57
27	58
28	59
29	61
30	62
31	64
32	66
33	68
34	76
35	77
36	78
37	80
38	82
39	86
40	87
41	89
42	91
43	92
44	93
45	98
46	103
47	109
48	110
49	118
50	124
51	127
52	128
53	129
54	132
55	133
56	135
57	136
58	139
59	140
60	141
61	142
62	143
63	149

n	a(n)
1	1
2	2
3	4
4	7
5	12
6	13
7	14
8	15
9	16
10	18
11	20
12	21
13	22
14	23
15	32
16	35
17	36
18	39
19	42
20	48
21	49
22	50
23	51
24	53
25	54
26	57
27	58
28	59
29	61
30	62
31	64
32	66
33	68
34	76
35	77
36	78
37	80
38	82
39	86
40	87
41	89
42	91
43	92
44	93
45	98
46	103
47	109
48	110
49	118
50	124
51	127
52	128
53	129
54	132
55	133
56	135
57	136
58	139
59	140
60	141
61	142
62	143
63	149