A064461 - cp's OEIS frontend

A064461 First row of Pascal's triangle that has n distinct nonsquarefree entries, or -1 if no such row exists.

n	a(n)
0	0
1	4
2	13
3	8
4	9
5	12
6	17
7	20
8	16
9	18
10	26
11	24
12	62
13	27
14	34
15	33
16	32
17	-1
18	36
19	40
20	-1
21	95
22	-1
23	79
24	48
25	50
26	54
27	60
28	56
29	74
30	67
31	65
32	64
33	73
34	-1
35	94
36	72
37	91
38	85
39	83
40	80
41	84
42	119
43	88
44	-1
45	97
46	104
47	101
48	96
49	98
50	100
51	-1
52	115
53	-1
54	108
55	114
56	112
57	123
58	122
59	120
60	121
61	125
62	131

[0, 4, 13, 8, 9, 12, 17, 20, 16, 18, 26, 24, 62, 27, 34, 33, 32, -1, 36, 40, -1, 95, -1, 79, 48, 50, 54, 60, 56, 74, 67, 65, 64, 73, -1, 94, 72, 91, 85, 83, 80, 84, 119, 88, -1, 97, 104, 101, 96, 98, 100, -1, 115, -1, 108, 114, 112, 123, 122, 120, 121, 125, 131]

cp's OEIS Frontend

A064461 First row of Pascal's triangle that has n distinct nonsquarefree entries, or -1 if no such row exists.

Table of values

List of values

n	a(n)
0	0
1	4
2	13
3	8
4	9
5	12
6	17
7	20
8	16
9	18
10	26
11	24
12	62
13	27
14	34
15	33
16	32
17	-1
18	36
19	40
20	-1
21	95
22	-1
23	79
24	48
25	50
26	54
27	60
28	56
29	74
30	67
31	65
32	64
33	73
34	-1
35	94
36	72
37	91
38	85
39	83
40	80
41	84
42	119
43	88
44	-1
45	97
46	104
47	101
48	96
49	98
50	100
51	-1
52	115
53	-1
54	108
55	114
56	112
57	123
58	122
59	120
60	121
61	125
62	131

n	a(n)
0	0
1	4
2	13
3	8
4	9
5	12
6	17
7	20
8	16
9	18
10	26
11	24
12	62
13	27
14	34
15	33
16	32
17	-1
18	36
19	40
20	-1
21	95
22	-1
23	79
24	48
25	50
26	54
27	60
28	56
29	74
30	67
31	65
32	64
33	73
34	-1
35	94
36	72
37	91
38	85
39	83
40	80
41	84
42	119
43	88
44	-1
45	97
46	104
47	101
48	96
49	98
50	100
51	-1
52	115
53	-1
54	108
55	114
56	112
57	123
58	122
59	120
60	121
61	125
62	131

n	a(n)
0	0
1	4
2	13
3	8
4	9
5	12
6	17
7	20
8	16
9	18
10	26
11	24
12	62
13	27
14	34
15	33
16	32
17	-1
18	36
19	40
20	-1
21	95
22	-1
23	79
24	48
25	50
26	54
27	60
28	56
29	74
30	67
31	65
32	64
33	73
34	-1
35	94
36	72
37	91
38	85
39	83
40	80
41	84
42	119
43	88
44	-1
45	97
46	104
47	101
48	96
49	98
50	100
51	-1
52	115
53	-1
54	108
55	114
56	112
57	123
58	122
59	120
60	121
61	125
62	131