A338481 - cp's OEIS frontend

A338481 Least number of octagonal numbers needed to represent n.

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

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

cp's OEIS Frontend

A338481 Least number of octagonal numbers needed to represent n.

Table of values

List of values

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

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

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