A204012 - cp's OEIS frontend

A204012 Symmetric matrix based on f(i,j)=min{3i+j-3,i+3j-3}, by antidiagonals.

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

[1, 2, 2, 3, 5, 3, 4, 6, 6, 4, 5, 7, 9, 7, 5, 6, 8, 10, 10, 8, 6, 7, 9, 11, 13, 11, 9, 7, 8, 10, 12, 14, 14, 12, 10, 8, 9, 11, 13, 15, 17, 15, 13, 11, 9, 10, 12, 14, 16, 18, 18, 16, 14, 12, 10, 11, 13, 15, 17, 19, 21, 19, 17, 15, 13, 11, 12, 14, 16, 18, 20, 22, 22, 20, 18]

cp's OEIS Frontend

A204012 Symmetric matrix based on f(i,j)=min{3i+j-3,i+3j-3}, by antidiagonals.

Table of values

List of values

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

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

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