A356300 - cp's OEIS frontend

A356300 Square array read by antidiagonals. A(n,k) is the nearest common ancestor of n and k in the binary tree depicted in A253563.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	3
14	2
15	1
16	1
17	2
18	2
19	2
20	2
21	1
22	1
23	2
24	3
25	4
26	3
27	2
28	1
29	1
30	2
31	2
32	2
33	2
34	2
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	1
47	2
48	2
49	2
50	2
51	2
52	2
53	2
54	2
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	5
63	4
64	3
65	2
66	1
67	1
68	2
69	2
70	2
71	2
72	2
73	2
74	2
75	2
76	2
77	2
78	1
79	1
80	2
81	3
82	4
83	3
84	4
85	7
86	4
87	3
88	4
89	3
90	2
91	1
92	1
93	2
94	2
95	2
96	2
97	2
98	2
99	2
100	2
101	2
102	2
103	2
104	2
105	1

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

cp's OEIS Frontend

A356300 Square array read by antidiagonals. A(n,k) is the nearest common ancestor of n and k in the binary tree depicted in A253563.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	3
14	2
15	1
16	1
17	2
18	2
19	2
20	2
21	1
22	1
23	2
24	3
25	4
26	3
27	2
28	1
29	1
30	2
31	2
32	2
33	2
34	2
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	1
47	2
48	2
49	2
50	2
51	2
52	2
53	2
54	2
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	5
63	4
64	3
65	2
66	1
67	1
68	2
69	2
70	2
71	2
72	2
73	2
74	2
75	2
76	2
77	2
78	1
79	1
80	2
81	3
82	4
83	3
84	4
85	7
86	4
87	3
88	4
89	3
90	2
91	1
92	1
93	2
94	2
95	2
96	2
97	2
98	2
99	2
100	2
101	2
102	2
103	2
104	2
105	1

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	3
14	2
15	1
16	1
17	2
18	2
19	2
20	2
21	1
22	1
23	2
24	3
25	4
26	3
27	2
28	1
29	1
30	2
31	2
32	2
33	2
34	2
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	1
47	2
48	2
49	2
50	2
51	2
52	2
53	2
54	2
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	5
63	4
64	3
65	2
66	1
67	1
68	2
69	2
70	2
71	2
72	2
73	2
74	2
75	2
76	2
77	2
78	1
79	1
80	2
81	3
82	4
83	3
84	4
85	7
86	4
87	3
88	4
89	3
90	2
91	1
92	1
93	2
94	2
95	2
96	2
97	2
98	2
99	2
100	2
101	2
102	2
103	2
104	2
105	1

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	3
14	2
15	1
16	1
17	2
18	2
19	2
20	2
21	1
22	1
23	2
24	3
25	4
26	3
27	2
28	1
29	1
30	2
31	2
32	2
33	2
34	2
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	1
47	2
48	2
49	2
50	2
51	2
52	2
53	2
54	2
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	5
63	4
64	3
65	2
66	1
67	1
68	2
69	2
70	2
71	2
72	2
73	2
74	2
75	2
76	2
77	2
78	1
79	1
80	2
81	3
82	4
83	3
84	4
85	7
86	4
87	3
88	4
89	3
90	2
91	1
92	1
93	2
94	2
95	2
96	2
97	2
98	2
99	2
100	2
101	2
102	2
103	2
104	2
105	1