A213921 - cp's OEIS frontend

A213921 Natural numbers placed in table T(n,k) layer by layer. The order of placement: at the beginning filled odd places of layer clockwise, next - even places clockwise. Table T(n,k) read by antidiagonals.

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	10
8	8
9	9
10	13
11	17
12	14
13	6
14	16
15	21
16	26
17	22
18	11
19	12
20	25
21	31
22	37
23	32
24	18
25	15
26	20
27	36
28	43
29	50
30	44
31	27
32	23
33	24
34	30
35	49
36	57
37	65
38	58
39	38
40	33
41	19
42	35
43	42
44	64
45	73
46	82
47	74
48	51
49	45
50	28
51	29
52	48
53	56
54	81
55	91
56	101
57	92
58	66
59	59
60	39
61	34
62	41
63	63
64	72
65	100
66	111

[1, 2, 3, 5, 4, 7, 10, 8, 9, 13, 17, 14, 6, 16, 21, 26, 22, 11, 12, 25, 31, 37, 32, 18, 15, 20, 36, 43, 50, 44, 27, 23, 24, 30, 49, 57, 65, 58, 38, 33, 19, 35, 42, 64, 73, 82, 74, 51, 45, 28, 29, 48, 56, 81, 91, 101, 92, 66, 59, 39, 34, 41, 63, 72, 100, 111]

cp's OEIS Frontend

A213921 Natural numbers placed in table T(n,k) layer by layer. The order of placement: at the beginning filled odd places of layer clockwise, next - even places clockwise. Table T(n,k) read by antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	10
8	8
9	9
10	13
11	17
12	14
13	6
14	16
15	21
16	26
17	22
18	11
19	12
20	25
21	31
22	37
23	32
24	18
25	15
26	20
27	36
28	43
29	50
30	44
31	27
32	23
33	24
34	30
35	49
36	57
37	65
38	58
39	38
40	33
41	19
42	35
43	42
44	64
45	73
46	82
47	74
48	51
49	45
50	28
51	29
52	48
53	56
54	81
55	91
56	101
57	92
58	66
59	59
60	39
61	34
62	41
63	63
64	72
65	100
66	111

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	10
8	8
9	9
10	13
11	17
12	14
13	6
14	16
15	21
16	26
17	22
18	11
19	12
20	25
21	31
22	37
23	32
24	18
25	15
26	20
27	36
28	43
29	50
30	44
31	27
32	23
33	24
34	30
35	49
36	57
37	65
38	58
39	38
40	33
41	19
42	35
43	42
44	64
45	73
46	82
47	74
48	51
49	45
50	28
51	29
52	48
53	56
54	81
55	91
56	101
57	92
58	66
59	59
60	39
61	34
62	41
63	63
64	72
65	100
66	111

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	10
8	8
9	9
10	13
11	17
12	14
13	6
14	16
15	21
16	26
17	22
18	11
19	12
20	25
21	31
22	37
23	32
24	18
25	15
26	20
27	36
28	43
29	50
30	44
31	27
32	23
33	24
34	30
35	49
36	57
37	65
38	58
39	38
40	33
41	19
42	35
43	42
44	64
45	73
46	82
47	74
48	51
49	45
50	28
51	29
52	48
53	56
54	81
55	91
56	101
57	92
58	66
59	59
60	39
61	34
62	41
63	63
64	72
65	100
66	111