A303401 - cp's OEIS frontend

A303401 Number of ways to write n as a(3a-1)/2 + b(3b-1)/2 + 3^c + 3^d with a,b,c,d nonnegative integers.

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

[0, 1, 1, 2, 1, 2, 2, 2, 1, 2, 2, 4, 1, 3, 2, 3, 2, 3, 3, 2, 1, 2, 3, 3, 2, 2, 2, 4, 4, 4, 3, 2, 3, 3, 3, 4, 3, 4, 2, 5, 4, 5, 1, 2, 3, 5, 2, 3, 2, 3, 2, 4, 5, 5, 3, 3, 3, 4, 4, 3, 2, 4, 4, 4, 3, 3, 3, 2, 3, 3, 2, 4, 2, 4, 5, 4, 5, 1, 3, 4]

cp's OEIS Frontend

A303401 Number of ways to write n as a(3a-1)/2 + b(3b-1)/2 + 3^c + 3^d with a,b,c,d nonnegative integers.

Table of values

List of values

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

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

cp's OEIS Frontend

A303401 Number of ways to write n as a*(3*a-1)/2 + b*(3*b-1)/2 + 3^c + 3^d with a,b,c,d nonnegative integers.

Table of values

List of values

A303401 Number of ways to write n as a(3a-1)/2 + b(3b-1)/2 + 3^c + 3^d with a,b,c,d nonnegative integers.

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