A213928 - cp's OEIS frontend

A213928 Natural numbers placed in table T(n,k) layer by layer. The order of placement - at the beginning 2 layers counterclockwise, next 1 layer clockwise and so on. T(n,k) read by antidiagonals.

n	a(n)
1	1
2	4
3	2
4	5
5	3
6	9
7	16
8	6
9	8
10	10
11	25
12	15
13	7
14	11
15	17
16	26
17	24
18	14
19	12
20	18
21	36
22	49
23	27
24	23
25	13
26	19
27	35
28	37
29	64
30	48
31	28
32	22
33	20
34	34
35	38
36	50
37	65
38	63
39	47
40	29
41	21
42	33
43	39
44	51
45	81
46	100
47	66
48	62
49	46
50	30
51	32
52	40
53	52
54	80
55	82
56	121
57	99
58	67
59	61
60	45
61	31
62	41
63	53
64	79
65	83
66	101

[1, 4, 2, 5, 3, 9, 16, 6, 8, 10, 25, 15, 7, 11, 17, 26, 24, 14, 12, 18, 36, 49, 27, 23, 13, 19, 35, 37, 64, 48, 28, 22, 20, 34, 38, 50, 65, 63, 47, 29, 21, 33, 39, 51, 81, 100, 66, 62, 46, 30, 32, 40, 52, 80, 82, 121, 99, 67, 61, 45, 31, 41, 53, 79, 83, 101]

cp's OEIS Frontend

A213928 Natural numbers placed in table T(n,k) layer by layer. The order of placement - at the beginning 2 layers counterclockwise, next 1 layer clockwise and so on. T(n,k) read by antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	4
3	2
4	5
5	3
6	9
7	16
8	6
9	8
10	10
11	25
12	15
13	7
14	11
15	17
16	26
17	24
18	14
19	12
20	18
21	36
22	49
23	27
24	23
25	13
26	19
27	35
28	37
29	64
30	48
31	28
32	22
33	20
34	34
35	38
36	50
37	65
38	63
39	47
40	29
41	21
42	33
43	39
44	51
45	81
46	100
47	66
48	62
49	46
50	30
51	32
52	40
53	52
54	80
55	82
56	121
57	99
58	67
59	61
60	45
61	31
62	41
63	53
64	79
65	83
66	101

n	a(n)
1	1
2	4
3	2
4	5
5	3
6	9
7	16
8	6
9	8
10	10
11	25
12	15
13	7
14	11
15	17
16	26
17	24
18	14
19	12
20	18
21	36
22	49
23	27
24	23
25	13
26	19
27	35
28	37
29	64
30	48
31	28
32	22
33	20
34	34
35	38
36	50
37	65
38	63
39	47
40	29
41	21
42	33
43	39
44	51
45	81
46	100
47	66
48	62
49	46
50	30
51	32
52	40
53	52
54	80
55	82
56	121
57	99
58	67
59	61
60	45
61	31
62	41
63	53
64	79
65	83
66	101

n	a(n)
1	1
2	4
3	2
4	5
5	3
6	9
7	16
8	6
9	8
10	10
11	25
12	15
13	7
14	11
15	17
16	26
17	24
18	14
19	12
20	18
21	36
22	49
23	27
24	23
25	13
26	19
27	35
28	37
29	64
30	48
31	28
32	22
33	20
34	34
35	38
36	50
37	65
38	63
39	47
40	29
41	21
42	33
43	39
44	51
45	81
46	100
47	66
48	62
49	46
50	30
51	32
52	40
53	52
54	80
55	82
56	121
57	99
58	67
59	61
60	45
61	31
62	41
63	53
64	79
65	83
66	101