A128282 - cp's OEIS frontend

A128282 Regular symmetric triangle, read by rows, whose left half consists of the positive integers.

n	a(n)
0	1
1	2
2	2
3	3
4	4
5	3
6	5
7	6
8	6
9	5
10	7
11	8
12	9
13	8
14	7
15	10
16	11
17	12
18	12
19	11
20	10
21	13
22	14
23	15
24	16
25	15
26	14
27	13
28	17
29	18
30	19
31	20
32	20
33	19
34	18
35	17
36	21
37	22
38	23
39	24
40	25
41	24
42	23
43	22
44	21
45	26
46	27
47	28
48	29
49	30
50	30
51	29
52	28
53	27
54	26
55	31
56	32
57	33
58	34
59	35
60	36
61	35
62	34
63	33
64	32
65	31
66	37
67	38
68	39
69	40
70	41
71	42
72	42
73	41
74	40
75	39
76	38
77	37

[1, 2, 2, 3, 4, 3, 5, 6, 6, 5, 7, 8, 9, 8, 7, 10, 11, 12, 12, 11, 10, 13, 14, 15, 16, 15, 14, 13, 17, 18, 19, 20, 20, 19, 18, 17, 21, 22, 23, 24, 25, 24, 23, 22, 21, 26, 27, 28, 29, 30, 30, 29, 28, 27, 26, 31, 32, 33, 34, 35, 36, 35, 34, 33, 32, 31, 37, 38, 39, 40, 41, 42, 42, 41, 40, 39, 38, 37]

cp's OEIS Frontend

A128282 Regular symmetric triangle, read by rows, whose left half consists of the positive integers.

Table of values

List of values

n	a(n)
0	1
1	2
2	2
3	3
4	4
5	3
6	5
7	6
8	6
9	5
10	7
11	8
12	9
13	8
14	7
15	10
16	11
17	12
18	12
19	11
20	10
21	13
22	14
23	15
24	16
25	15
26	14
27	13
28	17
29	18
30	19
31	20
32	20
33	19
34	18
35	17
36	21
37	22
38	23
39	24
40	25
41	24
42	23
43	22
44	21
45	26
46	27
47	28
48	29
49	30
50	30
51	29
52	28
53	27
54	26
55	31
56	32
57	33
58	34
59	35
60	36
61	35
62	34
63	33
64	32
65	31
66	37
67	38
68	39
69	40
70	41
71	42
72	42
73	41
74	40
75	39
76	38
77	37

n	a(n)
0	1
1	2
2	2
3	3
4	4
5	3
6	5
7	6
8	6
9	5
10	7
11	8
12	9
13	8
14	7
15	10
16	11
17	12
18	12
19	11
20	10
21	13
22	14
23	15
24	16
25	15
26	14
27	13
28	17
29	18
30	19
31	20
32	20
33	19
34	18
35	17
36	21
37	22
38	23
39	24
40	25
41	24
42	23
43	22
44	21
45	26
46	27
47	28
48	29
49	30
50	30
51	29
52	28
53	27
54	26
55	31
56	32
57	33
58	34
59	35
60	36
61	35
62	34
63	33
64	32
65	31
66	37
67	38
68	39
69	40
70	41
71	42
72	42
73	41
74	40
75	39
76	38
77	37

n	a(n)
0	1
1	2
2	2
3	3
4	4
5	3
6	5
7	6
8	6
9	5
10	7
11	8
12	9
13	8
14	7
15	10
16	11
17	12
18	12
19	11
20	10
21	13
22	14
23	15
24	16
25	15
26	14
27	13
28	17
29	18
30	19
31	20
32	20
33	19
34	18
35	17
36	21
37	22
38	23
39	24
40	25
41	24
42	23
43	22
44	21
45	26
46	27
47	28
48	29
49	30
50	30
51	29
52	28
53	27
54	26
55	31
56	32
57	33
58	34
59	35
60	36
61	35
62	34
63	33
64	32
65	31
66	37
67	38
68	39
69	40
70	41
71	42
72	42
73	41
74	40
75	39
76	38
77	37