A085015 - cp's OEIS frontend

A085015 Multiplicity of the root 1 in the characteristic polynomial mod 2 of the n X n matrix with entries binomial(i+j,i), 0<=i,j

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

[0, 1, 0, 3, 2, 5, 0, 3, 2, 5, 0, 11, 6, 9, 4, 7, 6, 9, 4, 15, 10, 21, 0, 11, 6, 9, 4, 15, 10, 13, 8, 11, 10, 13, 8, 19, 14, 25, 4, 15, 10, 21, 0, 43, 22, 33, 12, 23, 18, 21, 16, 27, 22, 33, 12, 23, 18, 21, 16, 27, 22, 25, 20, 23, 22, 25, 20, 31, 26, 37, 16, 27, 22, 33, 12, 55, 34, 45]

cp's OEIS Frontend

A085015 Multiplicity of the root 1 in the characteristic polynomial mod 2 of the n X n matrix with entries binomial(i+j,i), 0<=i,j

Table of values

List of values

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

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

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