A131108 - cp's OEIS frontend

A131108 T(n,k) = 2*A007318(n,k) - A097806(n,k).

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	1
6	2
7	6
8	5
9	1
10	2
11	8
12	12
13	7
14	1
15	2
16	10
17	20
18	20
19	9
20	1
21	2
22	12
23	30
24	40
25	30
26	11
27	1
28	2
29	14
30	42
31	70
32	70
33	42
34	13
35	1
36	2
37	16
38	56
39	112
40	140
41	112
42	56
43	15
44	1
45	2
46	18
47	72
48	168
49	252
50	252
51	168
52	72
53	17
54	1
55	2
56	20
57	90
58	240
59	420
60	504
61	420
62	240
63	90
64	19
65	1

[1, 1, 1, 2, 3, 1, 2, 6, 5, 1, 2, 8, 12, 7, 1, 2, 10, 20, 20, 9, 1, 2, 12, 30, 40, 30, 11, 1, 2, 14, 42, 70, 70, 42, 13, 1, 2, 16, 56, 112, 140, 112, 56, 15, 1, 2, 18, 72, 168, 252, 252, 168, 72, 17, 1, 2, 20, 90, 240, 420, 504, 420, 240, 90, 19, 1]

cp's OEIS Frontend

A131108 T(n,k) = 2*A007318(n,k) - A097806(n,k).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	1
6	2
7	6
8	5
9	1
10	2
11	8
12	12
13	7
14	1
15	2
16	10
17	20
18	20
19	9
20	1
21	2
22	12
23	30
24	40
25	30
26	11
27	1
28	2
29	14
30	42
31	70
32	70
33	42
34	13
35	1
36	2
37	16
38	56
39	112
40	140
41	112
42	56
43	15
44	1
45	2
46	18
47	72
48	168
49	252
50	252
51	168
52	72
53	17
54	1
55	2
56	20
57	90
58	240
59	420
60	504
61	420
62	240
63	90
64	19
65	1

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	1
6	2
7	6
8	5
9	1
10	2
11	8
12	12
13	7
14	1
15	2
16	10
17	20
18	20
19	9
20	1
21	2
22	12
23	30
24	40
25	30
26	11
27	1
28	2
29	14
30	42
31	70
32	70
33	42
34	13
35	1
36	2
37	16
38	56
39	112
40	140
41	112
42	56
43	15
44	1
45	2
46	18
47	72
48	168
49	252
50	252
51	168
52	72
53	17
54	1
55	2
56	20
57	90
58	240
59	420
60	504
61	420
62	240
63	90
64	19
65	1

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	1
6	2
7	6
8	5
9	1
10	2
11	8
12	12
13	7
14	1
15	2
16	10
17	20
18	20
19	9
20	1
21	2
22	12
23	30
24	40
25	30
26	11
27	1
28	2
29	14
30	42
31	70
32	70
33	42
34	13
35	1
36	2
37	16
38	56
39	112
40	140
41	112
42	56
43	15
44	1
45	2
46	18
47	72
48	168
49	252
50	252
51	168
52	72
53	17
54	1
55	2
56	20
57	90
58	240
59	420
60	504
61	420
62	240
63	90
64	19
65	1