A257011 - cp's OEIS frontend

A257011 Number of sequences of positive integers with length 4 and alternant equal to n.

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	6
7	5
8	8
9	11
10	10
11	10
12	20
13	11
14	16
15	21
16	24
17	15
18	26
19	23
20	28
21	31
22	22
23	24
24	49
25	27
26	36
27	33
28	36
29	33
30	52
31	33
32	46
33	51
34	42
35	41
36	64
37	41
38	38
39	54
40	74
41	43
42	64
43	44
44	66
45	63
46	56
47	57
48	88
49	59
50	58
51	79
52	60
53	52
54	96
55	61
56	92
57	69
58	68
59	72
60	110

[0, 0, 1, 2, 3, 6, 5, 8, 11, 10, 10, 20, 11, 16, 21, 24, 15, 26, 23, 28, 31, 22, 24, 49, 27, 36, 33, 36, 33, 52, 33, 46, 51, 42, 41, 64, 41, 38, 54, 74, 43, 64, 44, 66, 63, 56, 57, 88, 59, 58, 79, 60, 52, 96, 61, 92, 69, 68, 72, 110]

cp's OEIS Frontend

A257011 Number of sequences of positive integers with length 4 and alternant equal to n.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	6
7	5
8	8
9	11
10	10
11	10
12	20
13	11
14	16
15	21
16	24
17	15
18	26
19	23
20	28
21	31
22	22
23	24
24	49
25	27
26	36
27	33
28	36
29	33
30	52
31	33
32	46
33	51
34	42
35	41
36	64
37	41
38	38
39	54
40	74
41	43
42	64
43	44
44	66
45	63
46	56
47	57
48	88
49	59
50	58
51	79
52	60
53	52
54	96
55	61
56	92
57	69
58	68
59	72
60	110

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	6
7	5
8	8
9	11
10	10
11	10
12	20
13	11
14	16
15	21
16	24
17	15
18	26
19	23
20	28
21	31
22	22
23	24
24	49
25	27
26	36
27	33
28	36
29	33
30	52
31	33
32	46
33	51
34	42
35	41
36	64
37	41
38	38
39	54
40	74
41	43
42	64
43	44
44	66
45	63
46	56
47	57
48	88
49	59
50	58
51	79
52	60
53	52
54	96
55	61
56	92
57	69
58	68
59	72
60	110

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	6
7	5
8	8
9	11
10	10
11	10
12	20
13	11
14	16
15	21
16	24
17	15
18	26
19	23
20	28
21	31
22	22
23	24
24	49
25	27
26	36
27	33
28	36
29	33
30	52
31	33
32	46
33	51
34	42
35	41
36	64
37	41
38	38
39	54
40	74
41	43
42	64
43	44
44	66
45	63
46	56
47	57
48	88
49	59
50	58
51	79
52	60
53	52
54	96
55	61
56	92
57	69
58	68
59	72
60	110