A046688 - cp's OEIS frontend

A046688 Antidiagonals of square array in which k-th row (k>0) is an arithmetic progression of difference 2^(k-1).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	5
13	5
14	1
15	1
16	5
17	7
18	9
19	9
20	1
21	1
22	6
23	9
24	13
25	17
26	17
27	1
28	1
29	7
30	11
31	17
32	25
33	33
34	33
35	1
36	1
37	8
38	13
39	21
40	33
41	49
42	65
43	65
44	1
45	1
46	9
47	15
48	25
49	41
50	65
51	97
52	129
53	129
54	1
55	1
56	10
57	17
58	29
59	49
60	81
61	129
62	193
63	257
64	257
65	1
66	1
67	11
68	19
69	33
70	57
71	97
72	161
73	257
74	385
75	513
76	513
77	1

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 5, 5, 1, 1, 5, 7, 9, 9, 1, 1, 6, 9, 13, 17, 17, 1, 1, 7, 11, 17, 25, 33, 33, 1, 1, 8, 13, 21, 33, 49, 65, 65, 1, 1, 9, 15, 25, 41, 65, 97, 129, 129, 1, 1, 10, 17, 29, 49, 81, 129, 193, 257, 257, 1, 1, 11, 19, 33, 57, 97, 161, 257, 385, 513, 513, 1]

cp's OEIS Frontend

A046688 Antidiagonals of square array in which k-th row (k>0) is an arithmetic progression of difference 2^(k-1).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	5
13	5
14	1
15	1
16	5
17	7
18	9
19	9
20	1
21	1
22	6
23	9
24	13
25	17
26	17
27	1
28	1
29	7
30	11
31	17
32	25
33	33
34	33
35	1
36	1
37	8
38	13
39	21
40	33
41	49
42	65
43	65
44	1
45	1
46	9
47	15
48	25
49	41
50	65
51	97
52	129
53	129
54	1
55	1
56	10
57	17
58	29
59	49
60	81
61	129
62	193
63	257
64	257
65	1
66	1
67	11
68	19
69	33
70	57
71	97
72	161
73	257
74	385
75	513
76	513
77	1

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	5
13	5
14	1
15	1
16	5
17	7
18	9
19	9
20	1
21	1
22	6
23	9
24	13
25	17
26	17
27	1
28	1
29	7
30	11
31	17
32	25
33	33
34	33
35	1
36	1
37	8
38	13
39	21
40	33
41	49
42	65
43	65
44	1
45	1
46	9
47	15
48	25
49	41
50	65
51	97
52	129
53	129
54	1
55	1
56	10
57	17
58	29
59	49
60	81
61	129
62	193
63	257
64	257
65	1
66	1
67	11
68	19
69	33
70	57
71	97
72	161
73	257
74	385
75	513
76	513
77	1

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	5
13	5
14	1
15	1
16	5
17	7
18	9
19	9
20	1
21	1
22	6
23	9
24	13
25	17
26	17
27	1
28	1
29	7
30	11
31	17
32	25
33	33
34	33
35	1
36	1
37	8
38	13
39	21
40	33
41	49
42	65
43	65
44	1
45	1
46	9
47	15
48	25
49	41
50	65
51	97
52	129
53	129
54	1
55	1
56	10
57	17
58	29
59	49
60	81
61	129
62	193
63	257
64	257
65	1
66	1
67	11
68	19
69	33
70	57
71	97
72	161
73	257
74	385
75	513
76	513
77	1