A306439 - cp's OEIS frontend

A306439 Number of ways to write n as x(3x+1)/2 + y(3y+1)/2 + z(3z+1) + 3w(3w+1)/2, where x,y,z,w are nonnegative integers with x <= y.

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

[1, 0, 1, 0, 2, 0, 2, 1, 2, 1, 2, 1, 1, 2, 3, 2, 1, 2, 2, 2, 2, 4, 2, 3, 2, 3, 2, 3, 4, 3, 4, 1, 5, 1, 5, 3, 5, 4, 3, 4, 5, 1, 5, 3, 4, 4, 3, 7, 2, 4, 4, 7, 6, 6, 4, 4, 5, 3, 7, 5, 5, 8, 6, 7, 3, 6, 8, 6, 5, 4, 3, 4, 6, 7, 3, 7, 6, 10, 7, 5, 9, 3, 11, 4, 9, 7, 7, 10, 5, 9, 7, 7, 10, 8, 7, 5, 5, 9, 5, 9, 9]

cp's OEIS Frontend

A306439 Number of ways to write n as x(3x+1)/2 + y(3y+1)/2 + z(3z+1) + 3w(3w+1)/2, where x,y,z,w are nonnegative integers with x <= y.

Table of values

List of values

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

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

cp's OEIS Frontend

A306439 Number of ways to write n as x*(3x+1)/2 + y*(3y+1)/2 + z*(3z+1) + 3w*(3w+1)/2, where x,y,z,w are nonnegative integers with x <= y.

Table of values

List of values

A306439 Number of ways to write n as x(3x+1)/2 + y(3y+1)/2 + z(3z+1) + 3w(3w+1)/2, where x,y,z,w are nonnegative integers with x <= y.

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