A306239 - cp's OEIS frontend

A306239 Number of ways to write n as x^3 + y^3 + pen(z) + pen(w), where x, y, z, w are nonnegative integers with x <= y and z <= w, and pen(k) denotes the pentagonal number k(3k-1)/2.

n	a(n)
0	1
1	2
2	3
3	2
4	1
5	1
6	2
7	2
8	2
9	2
10	3
11	2
12	2
13	3
14	4
15	2
16	1
17	2
18	3
19	2
20	1
21	3
22	3
23	2
24	3
25	3
26	3
27	2
28	4
29	4
30	2
31	2
32	3
33	4
34	2
35	4
36	5
37	4
38	3
39	2
40	5
41	3
42	2
43	3
44	4
45	4
46	1
47	2
48	3
49	3
50	3
51	4
52	6
53	3
54	3
55	3
56	4
57	3
58	3
59	4
60	4
61	2
62	3
63	4
64	5
65	5
66	4
67	4
68	2
69	2
70	5
71	8
72	7
73	4
74	4
75	5
76	3
77	5
78	6
79	7
80	2
81	3
82	5
83	3
84	5
85	2
86	5
87	5
88	4
89	4
90	3
91	6
92	5
93	4
94	6
95	3
96	2
97	4
98	8
99	5
100	5

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

cp's OEIS Frontend

A306239 Number of ways to write n as x^3 + y^3 + pen(z) + pen(w), where x, y, z, w are nonnegative integers with x <= y and z <= w, and pen(k) denotes the pentagonal number k(3k-1)/2.

Table of values

List of values

n	a(n)
0	1
1	2
2	3
3	2
4	1
5	1
6	2
7	2
8	2
9	2
10	3
11	2
12	2
13	3
14	4
15	2
16	1
17	2
18	3
19	2
20	1
21	3
22	3
23	2
24	3
25	3
26	3
27	2
28	4
29	4
30	2
31	2
32	3
33	4
34	2
35	4
36	5
37	4
38	3
39	2
40	5
41	3
42	2
43	3
44	4
45	4
46	1
47	2
48	3
49	3
50	3
51	4
52	6
53	3
54	3
55	3
56	4
57	3
58	3
59	4
60	4
61	2
62	3
63	4
64	5
65	5
66	4
67	4
68	2
69	2
70	5
71	8
72	7
73	4
74	4
75	5
76	3
77	5
78	6
79	7
80	2
81	3
82	5
83	3
84	5
85	2
86	5
87	5
88	4
89	4
90	3
91	6
92	5
93	4
94	6
95	3
96	2
97	4
98	8
99	5
100	5

n	a(n)
0	1
1	2
2	3
3	2
4	1
5	1
6	2
7	2
8	2
9	2
10	3
11	2
12	2
13	3
14	4
15	2
16	1
17	2
18	3
19	2
20	1
21	3
22	3
23	2
24	3
25	3
26	3
27	2
28	4
29	4
30	2
31	2
32	3
33	4
34	2
35	4
36	5
37	4
38	3
39	2
40	5
41	3
42	2
43	3
44	4
45	4
46	1
47	2
48	3
49	3
50	3
51	4
52	6
53	3
54	3
55	3
56	4
57	3
58	3
59	4
60	4
61	2
62	3
63	4
64	5
65	5
66	4
67	4
68	2
69	2
70	5
71	8
72	7
73	4
74	4
75	5
76	3
77	5
78	6
79	7
80	2
81	3
82	5
83	3
84	5
85	2
86	5
87	5
88	4
89	4
90	3
91	6
92	5
93	4
94	6
95	3
96	2
97	4
98	8
99	5
100	5

cp's OEIS Frontend

A306239 Number of ways to write n as x^3 + y^3 + pen(z) + pen(w), where x, y, z, w are nonnegative integers with x <= y and z <= w, and pen(k) denotes the pentagonal number k*(3*k-1)/2.

Table of values

List of values

A306239 Number of ways to write n as x^3 + y^3 + pen(z) + pen(w), where x, y, z, w are nonnegative integers with x <= y and z <= w, and pen(k) denotes the pentagonal number k(3k-1)/2.

n	a(n)
0	1
1	2
2	3
3	2
4	1
5	1
6	2
7	2
8	2
9	2
10	3
11	2
12	2
13	3
14	4
15	2
16	1
17	2
18	3
19	2
20	1
21	3
22	3
23	2
24	3
25	3
26	3
27	2
28	4
29	4
30	2
31	2
32	3
33	4
34	2
35	4
36	5
37	4
38	3
39	2
40	5
41	3
42	2
43	3
44	4
45	4
46	1
47	2
48	3
49	3
50	3
51	4
52	6
53	3
54	3
55	3
56	4
57	3
58	3
59	4
60	4
61	2
62	3
63	4
64	5
65	5
66	4
67	4
68	2
69	2
70	5
71	8
72	7
73	4
74	4
75	5
76	3
77	5
78	6
79	7
80	2
81	3
82	5
83	3
84	5
85	2
86	5
87	5
88	4
89	4
90	3
91	6
92	5
93	4
94	6
95	3
96	2
97	4
98	8
99	5
100	5