A080396 - cp's OEIS frontend

A080396 Largest squarefree numbers dividing the binomial coefficients C(n,k) read by row, 0<=k<=n. Squarefree kernel of Pascal triangle.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	6
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	6
23	15
24	10
25	15
26	6
27	1
28	1
29	7
30	21
31	35
32	35
33	21
34	7
35	1
36	1
37	2
38	14
39	14
40	70
41	14
42	14
43	2
44	1
45	1
46	3
47	6
48	42
49	42
50	42
51	42
52	6
53	3
54	1
55	1
56	10
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	10
65	1
66	1
67	11
68	55
69	165
70	330
71	462
72	462
73	330
74	165
75	55
76	11
77	1
78	1
79	6
80	66

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 2, 6, 2, 1, 1, 5, 10, 10, 5, 1, 1, 6, 15, 10, 15, 6, 1, 1, 7, 21, 35, 35, 21, 7, 1, 1, 2, 14, 14, 70, 14, 14, 2, 1, 1, 3, 6, 42, 42, 42, 42, 6, 3, 1, 1, 10, 15, 30, 210, 42, 210, 30, 15, 10, 1, 1, 11, 55, 165, 330, 462, 462, 330, 165, 55, 11, 1, 1, 6, 66]

cp's OEIS Frontend

A080396 Largest squarefree numbers dividing the binomial coefficients C(n,k) read by row, 0<=k<=n. Squarefree kernel of Pascal triangle.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	6
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	6
23	15
24	10
25	15
26	6
27	1
28	1
29	7
30	21
31	35
32	35
33	21
34	7
35	1
36	1
37	2
38	14
39	14
40	70
41	14
42	14
43	2
44	1
45	1
46	3
47	6
48	42
49	42
50	42
51	42
52	6
53	3
54	1
55	1
56	10
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	10
65	1
66	1
67	11
68	55
69	165
70	330
71	462
72	462
73	330
74	165
75	55
76	11
77	1
78	1
79	6
80	66

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	6
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	6
23	15
24	10
25	15
26	6
27	1
28	1
29	7
30	21
31	35
32	35
33	21
34	7
35	1
36	1
37	2
38	14
39	14
40	70
41	14
42	14
43	2
44	1
45	1
46	3
47	6
48	42
49	42
50	42
51	42
52	6
53	3
54	1
55	1
56	10
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	10
65	1
66	1
67	11
68	55
69	165
70	330
71	462
72	462
73	330
74	165
75	55
76	11
77	1
78	1
79	6
80	66

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	6
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	6
23	15
24	10
25	15
26	6
27	1
28	1
29	7
30	21
31	35
32	35
33	21
34	7
35	1
36	1
37	2
38	14
39	14
40	70
41	14
42	14
43	2
44	1
45	1
46	3
47	6
48	42
49	42
50	42
51	42
52	6
53	3
54	1
55	1
56	10
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	10
65	1
66	1
67	11
68	55
69	165
70	330
71	462
72	462
73	330
74	165
75	55
76	11
77	1
78	1
79	6
80	66