A065230 - cp's OEIS frontend

A065230 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 hexagonal numbers. The first elements of the rows form a(n).

n	a(n)
0	1
1	1
2	3
3	6
4	4
5	9
6	15
7	7
8	15
9	24
10	6
11	17
12	29
13	42
14	11
15	26
16	42
17	59
18	11
19	30
20	50
21	71
22	2
23	25
24	49
25	74
26	100
27	7
28	35
29	64
30	94
31	125
32	4
33	37
34	71
35	106
36	142
37	179
38	27
39	66
40	106
41	147
42	189
43	1
44	45
45	90
46	136
47	183
48	231
49	4
50	54
51	105
52	157
53	210
54	264
55	319
56	50
57	107
58	165
59	224
60	284
61	345
62	29
63	92
64	156
65	221

[1, 1, 3, 6, 4, 9, 15, 7, 15, 24, 6, 17, 29, 42, 11, 26, 42, 59, 11, 30, 50, 71, 2, 25, 49, 74, 100, 7, 35, 64, 94, 125, 4, 37, 71, 106, 142, 179, 27, 66, 106, 147, 189, 1, 45, 90, 136, 183, 231, 4, 54, 105, 157, 210, 264, 319, 50, 107, 165, 224, 284, 345, 29, 92, 156, 221]

cp's OEIS Frontend

A065230 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 hexagonal 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	6
4	4
5	9
6	15
7	7
8	15
9	24
10	6
11	17
12	29
13	42
14	11
15	26
16	42
17	59
18	11
19	30
20	50
21	71
22	2
23	25
24	49
25	74
26	100
27	7
28	35
29	64
30	94
31	125
32	4
33	37
34	71
35	106
36	142
37	179
38	27
39	66
40	106
41	147
42	189
43	1
44	45
45	90
46	136
47	183
48	231
49	4
50	54
51	105
52	157
53	210
54	264
55	319
56	50
57	107
58	165
59	224
60	284
61	345
62	29
63	92
64	156
65	221

n	a(n)
0	1
1	1
2	3
3	6
4	4
5	9
6	15
7	7
8	15
9	24
10	6
11	17
12	29
13	42
14	11
15	26
16	42
17	59
18	11
19	30
20	50
21	71
22	2
23	25
24	49
25	74
26	100
27	7
28	35
29	64
30	94
31	125
32	4
33	37
34	71
35	106
36	142
37	179
38	27
39	66
40	106
41	147
42	189
43	1
44	45
45	90
46	136
47	183
48	231
49	4
50	54
51	105
52	157
53	210
54	264
55	319
56	50
57	107
58	165
59	224
60	284
61	345
62	29
63	92
64	156
65	221

n	a(n)
0	1
1	1
2	3
3	6
4	4
5	9
6	15
7	7
8	15
9	24
10	6
11	17
12	29
13	42
14	11
15	26
16	42
17	59
18	11
19	30
20	50
21	71
22	2
23	25
24	49
25	74
26	100
27	7
28	35
29	64
30	94
31	125
32	4
33	37
34	71
35	106
36	142
37	179
38	27
39	66
40	106
41	147
42	189
43	1
44	45
45	90
46	136
47	183
48	231
49	4
50	54
51	105
52	157
53	210
54	264
55	319
56	50
57	107
58	165
59	224
60	284
61	345
62	29
63	92
64	156
65	221