A303389 - cp's OEIS frontend

A303389 Number of ways to write n as a(a+1)/2 + b(b+1)/2 + 5^c + 5^d, where a,b,c,d are nonnegative integers with a <= b and c <= d.

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

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

cp's OEIS Frontend

A303389 Number of ways to write n as a(a+1)/2 + b(b+1)/2 + 5^c + 5^d, where a,b,c,d are nonnegative integers with a <= b and c <= d.

Table of values

List of values

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

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

cp's OEIS Frontend

A303389 Number of ways to write n as a*(a+1)/2 + b*(b+1)/2 + 5^c + 5^d, where a,b,c,d are nonnegative integers with a <= b and c <= d.

Table of values

List of values

A303389 Number of ways to write n as a(a+1)/2 + b(b+1)/2 + 5^c + 5^d, where a,b,c,d are nonnegative integers with a <= b and c <= d.

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