A080573 - cp's OEIS frontend

A080573 Number of ways writing n as a sum of two distinct Ulam numbers.

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

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

cp's OEIS Frontend

A080573 Number of ways writing n as a sum of two distinct Ulam numbers.

Table of values

List of values

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

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

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