A306291 - cp's OEIS frontend

A306291 List of possible numbers for the final 'trapped' square of a knight moving on an infinitely large 2-dimensional spirally numbered board starting from any square.

n	a(n)
1	104
2	125
3	149
4	150
5	215
6	235
7	247
8	260
9	261
10	262
11	266
12	277
13	295
14	311
15	329
16	330
17	365
18	368
19	369
20	385
21	389
22	404
23	406
24	408
25	424
26	425
27	432
28	445
29	448
30	467
31	469
32	489
33	490
34	494
35	495
36	512
37	518
38	534
39	535
40	536
41	556
42	557
43	558
44	561
45	569
46	580
47	581
48	582
49	583
50	586
51	588
52	604
53	605
54	606
55	629
56	631
57	632
58	634
59	655
60	659

[104, 125, 149, 150, 215, 235, 247, 260, 261, 262, 266, 277, 295, 311, 329, 330, 365, 368, 369, 385, 389, 404, 406, 408, 424, 425, 432, 445, 448, 467, 469, 489, 490, 494, 495, 512, 518, 534, 535, 536, 556, 557, 558, 561, 569, 580, 581, 582, 583, 586, 588, 604, 605, 606, 629, 631, 632, 634, 655, 659]

cp's OEIS Frontend

A306291 List of possible numbers for the final 'trapped' square of a knight moving on an infinitely large 2-dimensional spirally numbered board starting from any square.

Table of values

List of values

n	a(n)
1	104
2	125
3	149
4	150
5	215
6	235
7	247
8	260
9	261
10	262
11	266
12	277
13	295
14	311
15	329
16	330
17	365
18	368
19	369
20	385
21	389
22	404
23	406
24	408
25	424
26	425
27	432
28	445
29	448
30	467
31	469
32	489
33	490
34	494
35	495
36	512
37	518
38	534
39	535
40	536
41	556
42	557
43	558
44	561
45	569
46	580
47	581
48	582
49	583
50	586
51	588
52	604
53	605
54	606
55	629
56	631
57	632
58	634
59	655
60	659

n	a(n)
1	104
2	125
3	149
4	150
5	215
6	235
7	247
8	260
9	261
10	262
11	266
12	277
13	295
14	311
15	329
16	330
17	365
18	368
19	369
20	385
21	389
22	404
23	406
24	408
25	424
26	425
27	432
28	445
29	448
30	467
31	469
32	489
33	490
34	494
35	495
36	512
37	518
38	534
39	535
40	536
41	556
42	557
43	558
44	561
45	569
46	580
47	581
48	582
49	583
50	586
51	588
52	604
53	605
54	606
55	629
56	631
57	632
58	634
59	655
60	659

n	a(n)
1	104
2	125
3	149
4	150
5	215
6	235
7	247
8	260
9	261
10	262
11	266
12	277
13	295
14	311
15	329
16	330
17	365
18	368
19	369
20	385
21	389
22	404
23	406
24	408
25	424
26	425
27	432
28	445
29	448
30	467
31	469
32	489
33	490
34	494
35	495
36	512
37	518
38	534
39	535
40	536
41	556
42	557
43	558
44	561
45	569
46	580
47	581
48	582
49	583
50	586
51	588
52	604
53	605
54	606
55	629
56	631
57	632
58	634
59	655
60	659