A065231 - cp's OEIS frontend

A065231 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 heptagonal numbers (A000566). The first elements of the rows form a(n).

n	a(n)
0	1
1	1
2	3
3	6
4	3
5	8
6	14
7	3
8	11
9	20
10	30
11	7
12	19
13	32
14	46
15	6
16	22
17	39
18	57
19	76
20	15
21	36
22	58
23	81
24	105
25	18
26	44
27	71
28	99
29	128
30	10
31	41
32	73
33	106
34	140
35	175
36	22
37	59
38	97
39	136
40	176
41	217
42	24
43	67
44	111
45	156
46	202
47	249
48	11
49	60
50	110
51	161
52	213
53	266
54	320
55	33
56	89
57	146
58	204
59	263
60	323
61	384
62	43
63	106

[1, 1, 3, 6, 3, 8, 14, 3, 11, 20, 30, 7, 19, 32, 46, 6, 22, 39, 57, 76, 15, 36, 58, 81, 105, 18, 44, 71, 99, 128, 10, 41, 73, 106, 140, 175, 22, 59, 97, 136, 176, 217, 24, 67, 111, 156, 202, 249, 11, 60, 110, 161, 213, 266, 320, 33, 89, 146, 204, 263, 323, 384, 43, 106]

cp's OEIS Frontend

A065231 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 heptagonal numbers (A000566). 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	3
5	8
6	14
7	3
8	11
9	20
10	30
11	7
12	19
13	32
14	46
15	6
16	22
17	39
18	57
19	76
20	15
21	36
22	58
23	81
24	105
25	18
26	44
27	71
28	99
29	128
30	10
31	41
32	73
33	106
34	140
35	175
36	22
37	59
38	97
39	136
40	176
41	217
42	24
43	67
44	111
45	156
46	202
47	249
48	11
49	60
50	110
51	161
52	213
53	266
54	320
55	33
56	89
57	146
58	204
59	263
60	323
61	384
62	43
63	106

n	a(n)
0	1
1	1
2	3
3	6
4	3
5	8
6	14
7	3
8	11
9	20
10	30
11	7
12	19
13	32
14	46
15	6
16	22
17	39
18	57
19	76
20	15
21	36
22	58
23	81
24	105
25	18
26	44
27	71
28	99
29	128
30	10
31	41
32	73
33	106
34	140
35	175
36	22
37	59
38	97
39	136
40	176
41	217
42	24
43	67
44	111
45	156
46	202
47	249
48	11
49	60
50	110
51	161
52	213
53	266
54	320
55	33
56	89
57	146
58	204
59	263
60	323
61	384
62	43
63	106

n	a(n)
0	1
1	1
2	3
3	6
4	3
5	8
6	14
7	3
8	11
9	20
10	30
11	7
12	19
13	32
14	46
15	6
16	22
17	39
18	57
19	76
20	15
21	36
22	58
23	81
24	105
25	18
26	44
27	71
28	99
29	128
30	10
31	41
32	73
33	106
34	140
35	175
36	22
37	59
38	97
39	136
40	176
41	217
42	24
43	67
44	111
45	156
46	202
47	249
48	11
49	60
50	110
51	161
52	213
53	266
54	320
55	33
56	89
57	146
58	204
59	263
60	323
61	384
62	43
63	106