A065227 - cp's OEIS frontend

A065227 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the triangular numbers. The first elements of the rows form a(n).

n	a(n)
0	1
1	1
2	3
3	3
4	1
5	6
6	2
7	9
8	2
9	11
10	21
11	11
12	23
13	8
14	22
15	1
16	17
17	34
18	7
19	26
20	46
21	12
22	34
23	57
24	15
25	40
26	66
27	15
28	43
29	72
30	11
31	42
32	74
33	2
34	36
35	71
36	107
37	24
38	62
39	101
40	5
41	46
42	88
43	131
44	22
45	67
46	113
47	160
48	37
49	86
50	136
51	187
52	49
53	102
54	156
55	1
56	57
57	114
58	172
59	231
60	60
61	121
62	183
63	246
64	57
65	122
66	188
67	255

[1, 1, 3, 3, 1, 6, 2, 9, 2, 11, 21, 11, 23, 8, 22, 1, 17, 34, 7, 26, 46, 12, 34, 57, 15, 40, 66, 15, 43, 72, 11, 42, 74, 2, 36, 71, 107, 24, 62, 101, 5, 46, 88, 131, 22, 67, 113, 160, 37, 86, 136, 187, 49, 102, 156, 1, 57, 114, 172, 231, 60, 121, 183, 246, 57, 122, 188, 255]

cp's OEIS Frontend

A065227 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the triangular numbers. The first elements of the rows form a(n).

Table of values

List of values

n	a(n)
0	1
1	1
2	3
3	3
4	1
5	6
6	2
7	9
8	2
9	11
10	21
11	11
12	23
13	8
14	22
15	1
16	17
17	34
18	7
19	26
20	46
21	12
22	34
23	57
24	15
25	40
26	66
27	15
28	43
29	72
30	11
31	42
32	74
33	2
34	36
35	71
36	107
37	24
38	62
39	101
40	5
41	46
42	88
43	131
44	22
45	67
46	113
47	160
48	37
49	86
50	136
51	187
52	49
53	102
54	156
55	1
56	57
57	114
58	172
59	231
60	60
61	121
62	183
63	246
64	57
65	122
66	188
67	255

n	a(n)
0	1
1	1
2	3
3	3
4	1
5	6
6	2
7	9
8	2
9	11
10	21
11	11
12	23
13	8
14	22
15	1
16	17
17	34
18	7
19	26
20	46
21	12
22	34
23	57
24	15
25	40
26	66
27	15
28	43
29	72
30	11
31	42
32	74
33	2
34	36
35	71
36	107
37	24
38	62
39	101
40	5
41	46
42	88
43	131
44	22
45	67
46	113
47	160
48	37
49	86
50	136
51	187
52	49
53	102
54	156
55	1
56	57
57	114
58	172
59	231
60	60
61	121
62	183
63	246
64	57
65	122
66	188
67	255

n	a(n)
0	1
1	1
2	3
3	3
4	1
5	6
6	2
7	9
8	2
9	11
10	21
11	11
12	23
13	8
14	22
15	1
16	17
17	34
18	7
19	26
20	46
21	12
22	34
23	57
24	15
25	40
26	66
27	15
28	43
29	72
30	11
31	42
32	74
33	2
34	36
35	71
36	107
37	24
38	62
39	101
40	5
41	46
42	88
43	131
44	22
45	67
46	113
47	160
48	37
49	86
50	136
51	187
52	49
53	102
54	156
55	1
56	57
57	114
58	172
59	231
60	60
61	121
62	183
63	246
64	57
65	122
66	188
67	255