A220508 - cp's OEIS frontend

A220508 T(n,k) = n^2 + k if k <= n, otherwise T(n,k) = k*(k + 2) - n; square array T(n,k) read by ascending antidiagonals (n >= 0, k >= 0).

n	a(n)
0	0
1	1
2	3
3	4
4	2
5	8
6	9
7	5
8	7
9	15
10	16
11	10
12	6
13	14
14	24
15	25
16	17
17	11
18	13
19	23
20	35
21	36
22	26
23	18
24	12
25	22
26	34
27	48
28	49
29	37
30	27
31	19
32	21
33	33
34	47
35	63
36	64
37	50
38	38
39	28
40	20
41	32
42	46
43	62
44	80
45	81
46	65
47	51
48	39
49	29
50	31
51	45
52	61
53	79
54	99
55	100
56	82
57	66
58	52
59	40
60	30
61	44
62	60
63	78
64	98
65	120

[0, 1, 3, 4, 2, 8, 9, 5, 7, 15, 16, 10, 6, 14, 24, 25, 17, 11, 13, 23, 35, 36, 26, 18, 12, 22, 34, 48, 49, 37, 27, 19, 21, 33, 47, 63, 64, 50, 38, 28, 20, 32, 46, 62, 80, 81, 65, 51, 39, 29, 31, 45, 61, 79, 99, 100, 82, 66, 52, 40, 30, 44, 60, 78, 98, 120]

cp's OEIS Frontend

A220508 T(n,k) = n^2 + k if k <= n, otherwise T(n,k) = k*(k + 2) - n; square array T(n,k) read by ascending antidiagonals (n >= 0, k >= 0).

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	4
4	2
5	8
6	9
7	5
8	7
9	15
10	16
11	10
12	6
13	14
14	24
15	25
16	17
17	11
18	13
19	23
20	35
21	36
22	26
23	18
24	12
25	22
26	34
27	48
28	49
29	37
30	27
31	19
32	21
33	33
34	47
35	63
36	64
37	50
38	38
39	28
40	20
41	32
42	46
43	62
44	80
45	81
46	65
47	51
48	39
49	29
50	31
51	45
52	61
53	79
54	99
55	100
56	82
57	66
58	52
59	40
60	30
61	44
62	60
63	78
64	98
65	120

n	a(n)
0	0
1	1
2	3
3	4
4	2
5	8
6	9
7	5
8	7
9	15
10	16
11	10
12	6
13	14
14	24
15	25
16	17
17	11
18	13
19	23
20	35
21	36
22	26
23	18
24	12
25	22
26	34
27	48
28	49
29	37
30	27
31	19
32	21
33	33
34	47
35	63
36	64
37	50
38	38
39	28
40	20
41	32
42	46
43	62
44	80
45	81
46	65
47	51
48	39
49	29
50	31
51	45
52	61
53	79
54	99
55	100
56	82
57	66
58	52
59	40
60	30
61	44
62	60
63	78
64	98
65	120

n	a(n)
0	0
1	1
2	3
3	4
4	2
5	8
6	9
7	5
8	7
9	15
10	16
11	10
12	6
13	14
14	24
15	25
16	17
17	11
18	13
19	23
20	35
21	36
22	26
23	18
24	12
25	22
26	34
27	48
28	49
29	37
30	27
31	19
32	21
33	33
34	47
35	63
36	64
37	50
38	38
39	28
40	20
41	32
42	46
43	62
44	80
45	81
46	65
47	51
48	39
49	29
50	31
51	45
52	61
53	79
54	99
55	100
56	82
57	66
58	52
59	40
60	30
61	44
62	60
63	78
64	98
65	120