A204006 - cp's OEIS frontend

A204006 Symmetric matrix based on f(i,j) = min{2i+j-2,i+2j-2}, by antidiagonals.

n	a(n)
1	1
2	2
3	2
4	3
5	4
6	3
7	4
8	5
9	5
10	4
11	5
12	6
13	7
14	6
15	5
16	6
17	7
18	8
19	8
20	7
21	6
22	7
23	8
24	9
25	10
26	9
27	8
28	7
29	8
30	9
31	10
32	11
33	11
34	10
35	9
36	8
37	9
38	10
39	11
40	12
41	13
42	12
43	11
44	10
45	9
46	10
47	11
48	12
49	13
50	14
51	14
52	13
53	12
54	11
55	10
56	11
57	12
58	13
59	14
60	15
61	16
62	15
63	14
64	13
65	12
66	11
67	12
68	13
69	14
70	15
71	16
72	17
73	17
74	16
75	15
76	14
77	13
78	12

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

cp's OEIS Frontend

A204006 Symmetric matrix based on f(i,j) = min{2i+j-2,i+2j-2}, by antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	3
5	4
6	3
7	4
8	5
9	5
10	4
11	5
12	6
13	7
14	6
15	5
16	6
17	7
18	8
19	8
20	7
21	6
22	7
23	8
24	9
25	10
26	9
27	8
28	7
29	8
30	9
31	10
32	11
33	11
34	10
35	9
36	8
37	9
38	10
39	11
40	12
41	13
42	12
43	11
44	10
45	9
46	10
47	11
48	12
49	13
50	14
51	14
52	13
53	12
54	11
55	10
56	11
57	12
58	13
59	14
60	15
61	16
62	15
63	14
64	13
65	12
66	11
67	12
68	13
69	14
70	15
71	16
72	17
73	17
74	16
75	15
76	14
77	13
78	12

n	a(n)
1	1
2	2
3	2
4	3
5	4
6	3
7	4
8	5
9	5
10	4
11	5
12	6
13	7
14	6
15	5
16	6
17	7
18	8
19	8
20	7
21	6
22	7
23	8
24	9
25	10
26	9
27	8
28	7
29	8
30	9
31	10
32	11
33	11
34	10
35	9
36	8
37	9
38	10
39	11
40	12
41	13
42	12
43	11
44	10
45	9
46	10
47	11
48	12
49	13
50	14
51	14
52	13
53	12
54	11
55	10
56	11
57	12
58	13
59	14
60	15
61	16
62	15
63	14
64	13
65	12
66	11
67	12
68	13
69	14
70	15
71	16
72	17
73	17
74	16
75	15
76	14
77	13
78	12

n	a(n)
1	1
2	2
3	2
4	3
5	4
6	3
7	4
8	5
9	5
10	4
11	5
12	6
13	7
14	6
15	5
16	6
17	7
18	8
19	8
20	7
21	6
22	7
23	8
24	9
25	10
26	9
27	8
28	7
29	8
30	9
31	10
32	11
33	11
34	10
35	9
36	8
37	9
38	10
39	11
40	12
41	13
42	12
43	11
44	10
45	9
46	10
47	11
48	12
49	13
50	14
51	14
52	13
53	12
54	11
55	10
56	11
57	12
58	13
59	14
60	15
61	16
62	15
63	14
64	13
65	12
66	11
67	12
68	13
69	14
70	15
71	16
72	17
73	17
74	16
75	15
76	14
77	13
78	12