A325239 - cp's OEIS frontend

A325239 Irregular triangle read by rows where row 1 is {1} and row n > 1 is the sequence starting with n and repeatedly applying A181819 until 2 is reached.

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

[1, 2, 3, 2, 4, 3, 2, 5, 2, 6, 4, 3, 2, 7, 2, 8, 5, 2, 9, 3, 2, 10, 4, 3, 2, 11, 2, 12, 6, 4, 3, 2, 13, 2, 14, 4, 3, 2, 15, 4, 3, 2, 16, 7, 2, 17, 2, 18, 6, 4, 3, 2, 19, 2, 20, 6, 4, 3, 2, 21, 4, 3, 2, 22, 4, 3, 2, 23, 2, 24, 10, 4, 3, 2, 25, 3, 2, 26, 4, 3, 2]

cp's OEIS Frontend

A325239 Irregular triangle read by rows where row 1 is {1} and row n > 1 is the sequence starting with n and repeatedly applying A181819 until 2 is reached.

Table of values

List of values

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

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

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