A077222 - cp's OEIS frontend

A077222 a(1) = 1 and then alternately the smallest even and odd numbers not occurring earlier such that the sum of two successive terms is a square.

n	a(n)
0	1
1	8
2	17
3	32
4	49
5	72
6	9
7	16
8	33
9	48
10	73
11	96
12	25
13	24
14	57
15	64
16	105
17	120
18	169
19	56
20	65
21	104
22	121
23	168
24	193
25	248
26	41
27	40
28	81
29	88
30	137
31	152
32	209
33	80
34	89
35	136
36	153
37	208
38	233
39	128
40	97
41	192
42	249
43	112
44	113
45	176
46	185
47	256
48	273
49	352
50	177
51	184
52	257
53	272
54	353
55	376
56	465
57	160

[1, 8, 17, 32, 49, 72, 9, 16, 33, 48, 73, 96, 25, 24, 57, 64, 105, 120, 169, 56, 65, 104, 121, 168, 193, 248, 41, 40, 81, 88, 137, 152, 209, 80, 89, 136, 153, 208, 233, 128, 97, 192, 249, 112, 113, 176, 185, 256, 273, 352, 177, 184, 257, 272, 353, 376, 465, 160]

cp's OEIS Frontend

A077222 a(1) = 1 and then alternately the smallest even and odd numbers not occurring earlier such that the sum of two successive terms is a square.

Table of values

List of values

n	a(n)
0	1
1	8
2	17
3	32
4	49
5	72
6	9
7	16
8	33
9	48
10	73
11	96
12	25
13	24
14	57
15	64
16	105
17	120
18	169
19	56
20	65
21	104
22	121
23	168
24	193
25	248
26	41
27	40
28	81
29	88
30	137
31	152
32	209
33	80
34	89
35	136
36	153
37	208
38	233
39	128
40	97
41	192
42	249
43	112
44	113
45	176
46	185
47	256
48	273
49	352
50	177
51	184
52	257
53	272
54	353
55	376
56	465
57	160

n	a(n)
0	1
1	8
2	17
3	32
4	49
5	72
6	9
7	16
8	33
9	48
10	73
11	96
12	25
13	24
14	57
15	64
16	105
17	120
18	169
19	56
20	65
21	104
22	121
23	168
24	193
25	248
26	41
27	40
28	81
29	88
30	137
31	152
32	209
33	80
34	89
35	136
36	153
37	208
38	233
39	128
40	97
41	192
42	249
43	112
44	113
45	176
46	185
47	256
48	273
49	352
50	177
51	184
52	257
53	272
54	353
55	376
56	465
57	160

n	a(n)
0	1
1	8
2	17
3	32
4	49
5	72
6	9
7	16
8	33
9	48
10	73
11	96
12	25
13	24
14	57
15	64
16	105
17	120
18	169
19	56
20	65
21	104
22	121
23	168
24	193
25	248
26	41
27	40
28	81
29	88
30	137
31	152
32	209
33	80
34	89
35	136
36	153
37	208
38	233
39	128
40	97
41	192
42	249
43	112
44	113
45	176
46	185
47	256
48	273
49	352
50	177
51	184
52	257
53	272
54	353
55	376
56	465
57	160