A131350 - cp's OEIS frontend

A131350 2*A007318 - A049310 as infinite lower triangular matrices.

n	a(n)
0	1
1	2
2	1
3	1
4	4
5	1
6	2
7	4
8	6
9	1
10	1
11	8
12	9
13	8
14	1
15	2
16	7
17	20
18	16
19	10
20	1
21	1
22	12
23	24
24	40
25	25
26	12
27	1
28	2
29	10
30	42
31	60
32	70
33	36
34	14
35	1
36	1
37	16
38	46
39	112
40	125
41	112
42	49
43	16
44	1
45	2
46	13
47	72
48	148
49	252
50	231
51	168
52	64
53	18
54	1

[1, 2, 1, 1, 4, 1, 2, 4, 6, 1, 1, 8, 9, 8, 1, 2, 7, 20, 16, 10, 1, 1, 12, 24, 40, 25, 12, 1, 2, 10, 42, 60, 70, 36, 14, 1, 1, 16, 46, 112, 125, 112, 49, 16, 1, 2, 13, 72, 148, 252, 231, 168, 64, 18, 1]

cp's OEIS Frontend

A131350 2*A007318 - A049310 as infinite lower triangular matrices.

Table of values

List of values

n	a(n)
0	1
1	2
2	1
3	1
4	4
5	1
6	2
7	4
8	6
9	1
10	1
11	8
12	9
13	8
14	1
15	2
16	7
17	20
18	16
19	10
20	1
21	1
22	12
23	24
24	40
25	25
26	12
27	1
28	2
29	10
30	42
31	60
32	70
33	36
34	14
35	1
36	1
37	16
38	46
39	112
40	125
41	112
42	49
43	16
44	1
45	2
46	13
47	72
48	148
49	252
50	231
51	168
52	64
53	18
54	1

n	a(n)
0	1
1	2
2	1
3	1
4	4
5	1
6	2
7	4
8	6
9	1
10	1
11	8
12	9
13	8
14	1
15	2
16	7
17	20
18	16
19	10
20	1
21	1
22	12
23	24
24	40
25	25
26	12
27	1
28	2
29	10
30	42
31	60
32	70
33	36
34	14
35	1
36	1
37	16
38	46
39	112
40	125
41	112
42	49
43	16
44	1
45	2
46	13
47	72
48	148
49	252
50	231
51	168
52	64
53	18
54	1

n	a(n)
0	1
1	2
2	1
3	1
4	4
5	1
6	2
7	4
8	6
9	1
10	1
11	8
12	9
13	8
14	1
15	2
16	7
17	20
18	16
19	10
20	1
21	1
22	12
23	24
24	40
25	25
26	12
27	1
28	2
29	10
30	42
31	60
32	70
33	36
34	14
35	1
36	1
37	16
38	46
39	112
40	125
41	112
42	49
43	16
44	1
45	2
46	13
47	72
48	148
49	252
50	231
51	168
52	64
53	18
54	1