A065233 - cp's OEIS frontend

A065233 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where the b(n) are the nonzero 9-gonal (nonagonal) numbers 1, 9, 24, 46, ... (A001106). The initial elements of the rows form a(n).

n	a(n)
0	1
1	1
2	3
3	6
4	1
5	6
6	12
7	19
8	3
9	12
10	22
11	33
12	45
13	12
14	26
15	41
16	57
17	74
18	17
19	36
20	56
21	77
22	99
23	11
24	35
25	60
26	86
27	113
28	141
29	16
30	46
31	77
32	109
33	142
34	176
35	7
36	43
37	80
38	118
39	157
40	197
41	238
42	19
43	62
44	106
45	151
46	197
47	244
48	292
49	16
50	66
51	117
52	169
53	222
54	276
55	331
56	387
57	48
58	106
59	165
60	225
61	286
62	348

[1, 1, 3, 6, 1, 6, 12, 19, 3, 12, 22, 33, 45, 12, 26, 41, 57, 74, 17, 36, 56, 77, 99, 11, 35, 60, 86, 113, 141, 16, 46, 77, 109, 142, 176, 7, 43, 80, 118, 157, 197, 238, 19, 62, 106, 151, 197, 244, 292, 16, 66, 117, 169, 222, 276, 331, 387, 48, 106, 165, 225, 286, 348]

cp's OEIS Frontend

A065233 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where the b(n) are the nonzero 9-gonal (nonagonal) numbers 1, 9, 24, 46, ... (A001106). The initial 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	1
5	6
6	12
7	19
8	3
9	12
10	22
11	33
12	45
13	12
14	26
15	41
16	57
17	74
18	17
19	36
20	56
21	77
22	99
23	11
24	35
25	60
26	86
27	113
28	141
29	16
30	46
31	77
32	109
33	142
34	176
35	7
36	43
37	80
38	118
39	157
40	197
41	238
42	19
43	62
44	106
45	151
46	197
47	244
48	292
49	16
50	66
51	117
52	169
53	222
54	276
55	331
56	387
57	48
58	106
59	165
60	225
61	286
62	348

n	a(n)
0	1
1	1
2	3
3	6
4	1
5	6
6	12
7	19
8	3
9	12
10	22
11	33
12	45
13	12
14	26
15	41
16	57
17	74
18	17
19	36
20	56
21	77
22	99
23	11
24	35
25	60
26	86
27	113
28	141
29	16
30	46
31	77
32	109
33	142
34	176
35	7
36	43
37	80
38	118
39	157
40	197
41	238
42	19
43	62
44	106
45	151
46	197
47	244
48	292
49	16
50	66
51	117
52	169
53	222
54	276
55	331
56	387
57	48
58	106
59	165
60	225
61	286
62	348

n	a(n)
0	1
1	1
2	3
3	6
4	1
5	6
6	12
7	19
8	3
9	12
10	22
11	33
12	45
13	12
14	26
15	41
16	57
17	74
18	17
19	36
20	56
21	77
22	99
23	11
24	35
25	60
26	86
27	113
28	141
29	16
30	46
31	77
32	109
33	142
34	176
35	7
36	43
37	80
38	118
39	157
40	197
41	238
42	19
43	62
44	106
45	151
46	197
47	244
48	292
49	16
50	66
51	117
52	169
53	222
54	276
55	331
56	387
57	48
58	106
59	165
60	225
61	286
62	348