A255604 - cp's OEIS frontend

A255604 Table read by antidiagonals, T(n,k) is the integer part of the area of a regular k-gon with side length n.

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	1
7	6
8	9
9	6
10	2
11	10
12	16
13	15
14	10
15	3
16	15
17	25
18	27
19	23
20	14
21	4
22	21
23	36
24	43
25	41
26	32
27	19
28	6
29	27
30	49
31	61
32	64
33	58
34	43
35	24
36	7
37	35
38	64
39	84
40	93
41	90
42	77
43	55
44	30
45	9
46	43
47	81
48	110
49	127
50	130
51	120
52	98
53	69
54	37
55	11
56	52
57	100
58	139
59	166
60	178
61	173
62	154
63	123
64	84
65	44
66	13
67	62
68	121
69	172

[0, 1, 1, 3, 4, 1, 6, 9, 6, 2, 10, 16, 15, 10, 3, 15, 25, 27, 23, 14, 4, 21, 36, 43, 41, 32, 19, 6, 27, 49, 61, 64, 58, 43, 24, 7, 35, 64, 84, 93, 90, 77, 55, 30, 9, 43, 81, 110, 127, 130, 120, 98, 69, 37, 11, 52, 100, 139, 166, 178, 173, 154, 123, 84, 44, 13, 62, 121, 172]

cp's OEIS Frontend

A255604 Table read by antidiagonals, T(n,k) is the integer part of the area of a regular k-gon with side length n.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	1
7	6
8	9
9	6
10	2
11	10
12	16
13	15
14	10
15	3
16	15
17	25
18	27
19	23
20	14
21	4
22	21
23	36
24	43
25	41
26	32
27	19
28	6
29	27
30	49
31	61
32	64
33	58
34	43
35	24
36	7
37	35
38	64
39	84
40	93
41	90
42	77
43	55
44	30
45	9
46	43
47	81
48	110
49	127
50	130
51	120
52	98
53	69
54	37
55	11
56	52
57	100
58	139
59	166
60	178
61	173
62	154
63	123
64	84
65	44
66	13
67	62
68	121
69	172

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	1
7	6
8	9
9	6
10	2
11	10
12	16
13	15
14	10
15	3
16	15
17	25
18	27
19	23
20	14
21	4
22	21
23	36
24	43
25	41
26	32
27	19
28	6
29	27
30	49
31	61
32	64
33	58
34	43
35	24
36	7
37	35
38	64
39	84
40	93
41	90
42	77
43	55
44	30
45	9
46	43
47	81
48	110
49	127
50	130
51	120
52	98
53	69
54	37
55	11
56	52
57	100
58	139
59	166
60	178
61	173
62	154
63	123
64	84
65	44
66	13
67	62
68	121
69	172

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	1
7	6
8	9
9	6
10	2
11	10
12	16
13	15
14	10
15	3
16	15
17	25
18	27
19	23
20	14
21	4
22	21
23	36
24	43
25	41
26	32
27	19
28	6
29	27
30	49
31	61
32	64
33	58
34	43
35	24
36	7
37	35
38	64
39	84
40	93
41	90
42	77
43	55
44	30
45	9
46	43
47	81
48	110
49	127
50	130
51	120
52	98
53	69
54	37
55	11
56	52
57	100
58	139
59	166
60	178
61	173
62	154
63	123
64	84
65	44
66	13
67	62
68	121
69	172