A194127 - cp's OEIS frontend

A194127 Listed by antidiagonals, array A(k,n) = digital root of n-th nonzero centered k-gonal number.

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

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

cp's OEIS Frontend

A194127 Listed by antidiagonals, array A(k,n) = digital root of n-th nonzero centered k-gonal number.

Table of values

List of values

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

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

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