A193043 - cp's OEIS frontend

A193043 Listed by antidiagonals, array A[k,n] = digital root of n-th nonzero k-gonal number.

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	1
11	1
12	6
13	3
14	7
15	6
16	1
17	7
18	6
19	4
20	7
21	3
22	1
23	8
24	9
25	1
26	8
27	9
28	1
29	1
30	9
31	3
32	7
33	9
34	6
35	4
36	9
37	1
38	1
39	6
40	4
41	1
42	3
43	7
44	1
45	9
46	1
47	2
48	9
49	1
50	2
51	9
52	1
53	2
54	9
55	1
56	1
57	3
58	3
59	7
60	3
61	6
62	4
63	3
64	9
65	1
66	3
67	1
68	4
69	6
70	4
71	4
72	3
73	7
74	4
75	9
76	1
77	4
78	6
79	1
80	5
81	9
82	1
83	5
84	9
85	1
86	5
87	9
88	1
89	5
90	9
91	1

[1, 1, 3, 1, 4, 6, 1, 5, 9, 1, 1, 6, 3, 7, 6, 1, 7, 6, 4, 7, 3, 1, 8, 9, 1, 8, 9, 1, 1, 9, 3, 7, 9, 6, 4, 9, 1, 1, 6, 4, 1, 3, 7, 1, 9, 1, 2, 9, 1, 2, 9, 1, 2, 9, 1, 1, 3, 3, 7, 3, 6, 4, 3, 9, 1, 3, 1, 4, 6, 4, 4, 3, 7, 4, 9, 1, 4, 6, 1, 5, 9, 1, 5, 9, 1, 5, 9, 1, 5, 9, 1]

cp's OEIS Frontend

A193043 Listed by antidiagonals, array A[k,n] = digital root of n-th nonzero k-gonal number.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	1
11	1
12	6
13	3
14	7
15	6
16	1
17	7
18	6
19	4
20	7
21	3
22	1
23	8
24	9
25	1
26	8
27	9
28	1
29	1
30	9
31	3
32	7
33	9
34	6
35	4
36	9
37	1
38	1
39	6
40	4
41	1
42	3
43	7
44	1
45	9
46	1
47	2
48	9
49	1
50	2
51	9
52	1
53	2
54	9
55	1
56	1
57	3
58	3
59	7
60	3
61	6
62	4
63	3
64	9
65	1
66	3
67	1
68	4
69	6
70	4
71	4
72	3
73	7
74	4
75	9
76	1
77	4
78	6
79	1
80	5
81	9
82	1
83	5
84	9
85	1
86	5
87	9
88	1
89	5
90	9
91	1

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	1
11	1
12	6
13	3
14	7
15	6
16	1
17	7
18	6
19	4
20	7
21	3
22	1
23	8
24	9
25	1
26	8
27	9
28	1
29	1
30	9
31	3
32	7
33	9
34	6
35	4
36	9
37	1
38	1
39	6
40	4
41	1
42	3
43	7
44	1
45	9
46	1
47	2
48	9
49	1
50	2
51	9
52	1
53	2
54	9
55	1
56	1
57	3
58	3
59	7
60	3
61	6
62	4
63	3
64	9
65	1
66	3
67	1
68	4
69	6
70	4
71	4
72	3
73	7
74	4
75	9
76	1
77	4
78	6
79	1
80	5
81	9
82	1
83	5
84	9
85	1
86	5
87	9
88	1
89	5
90	9
91	1

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	1
11	1
12	6
13	3
14	7
15	6
16	1
17	7
18	6
19	4
20	7
21	3
22	1
23	8
24	9
25	1
26	8
27	9
28	1
29	1
30	9
31	3
32	7
33	9
34	6
35	4
36	9
37	1
38	1
39	6
40	4
41	1
42	3
43	7
44	1
45	9
46	1
47	2
48	9
49	1
50	2
51	9
52	1
53	2
54	9
55	1
56	1
57	3
58	3
59	7
60	3
61	6
62	4
63	3
64	9
65	1
66	3
67	1
68	4
69	6
70	4
71	4
72	3
73	7
74	4
75	9
76	1
77	4
78	6
79	1
80	5
81	9
82	1
83	5
84	9
85	1
86	5
87	9
88	1
89	5
90	9
91	1