A265691 - cp's OEIS frontend

A265691 Irregular triangle read by rows: row n gives lexicographically first addition chain of minimal length for n.

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

[1, 1, 2, 1, 2, 3, 1, 2, 4, 1, 2, 3, 5, 1, 2, 3, 6, 1, 2, 3, 4, 7, 1, 2, 4, 8, 1, 2, 3, 6, 9, 1, 2, 3, 5, 10, 1, 2, 3, 4, 7, 11, 1, 2, 3, 6, 12, 1, 2, 3, 5, 8, 13, 1, 2, 3, 4, 7, 14, 1, 2, 3, 5, 10, 15, 1, 2, 4, 8, 16, 1, 2, 4, 8, 9, 17, 1, 2, 3, 6, 9, 18, 1, 2, 3, 4, 8, 11, 19, 1, 2, 3, 5, 10, 20]

cp's OEIS Frontend

A265691 Irregular triangle read by rows: row n gives lexicographically first addition chain of minimal length for n.

Table of values

List of values

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

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

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