A225233 - cp's OEIS frontend

A225233 Triangle read by rows: T(n, k) = (2n + 2 - k)k, for 0 <= k <= n.

n	a(n)
0	0
1	0
2	3
3	0
4	5
5	8
6	0
7	7
8	12
9	15
10	0
11	9
12	16
13	21
14	24
15	0
16	11
17	20
18	27
19	32
20	35
21	0
22	13
23	24
24	33
25	40
26	45
27	48
28	0
29	15
30	28
31	39
32	48
33	55
34	60
35	63
36	0
37	17
38	32
39	45
40	56
41	65
42	72
43	77
44	80
45	0
46	19
47	36
48	51
49	64
50	75
51	84
52	91
53	96
54	99
55	0
56	21
57	40
58	57
59	72
60	85
61	96
62	105
63	112
64	117
65	120
66	0
67	23
68	44
69	63
70	80
71	95
72	108
73	119
74	128
75	135
76	140
77	143
78	0
79	25

[0, 0, 3, 0, 5, 8, 0, 7, 12, 15, 0, 9, 16, 21, 24, 0, 11, 20, 27, 32, 35, 0, 13, 24, 33, 40, 45, 48, 0, 15, 28, 39, 48, 55, 60, 63, 0, 17, 32, 45, 56, 65, 72, 77, 80, 0, 19, 36, 51, 64, 75, 84, 91, 96, 99, 0, 21, 40, 57, 72, 85, 96, 105, 112, 117, 120, 0, 23, 44, 63, 80, 95, 108, 119, 128, 135, 140, 143, 0, 25]

cp's OEIS Frontend

A225233 Triangle read by rows: T(n, k) = (2n + 2 - k)k, for 0 <= k <= n.

Table of values

List of values

n	a(n)
0	0
1	0
2	3
3	0
4	5
5	8
6	0
7	7
8	12
9	15
10	0
11	9
12	16
13	21
14	24
15	0
16	11
17	20
18	27
19	32
20	35
21	0
22	13
23	24
24	33
25	40
26	45
27	48
28	0
29	15
30	28
31	39
32	48
33	55
34	60
35	63
36	0
37	17
38	32
39	45
40	56
41	65
42	72
43	77
44	80
45	0
46	19
47	36
48	51
49	64
50	75
51	84
52	91
53	96
54	99
55	0
56	21
57	40
58	57
59	72
60	85
61	96
62	105
63	112
64	117
65	120
66	0
67	23
68	44
69	63
70	80
71	95
72	108
73	119
74	128
75	135
76	140
77	143
78	0
79	25

n	a(n)
0	0
1	0
2	3
3	0
4	5
5	8
6	0
7	7
8	12
9	15
10	0
11	9
12	16
13	21
14	24
15	0
16	11
17	20
18	27
19	32
20	35
21	0
22	13
23	24
24	33
25	40
26	45
27	48
28	0
29	15
30	28
31	39
32	48
33	55
34	60
35	63
36	0
37	17
38	32
39	45
40	56
41	65
42	72
43	77
44	80
45	0
46	19
47	36
48	51
49	64
50	75
51	84
52	91
53	96
54	99
55	0
56	21
57	40
58	57
59	72
60	85
61	96
62	105
63	112
64	117
65	120
66	0
67	23
68	44
69	63
70	80
71	95
72	108
73	119
74	128
75	135
76	140
77	143
78	0
79	25

cp's OEIS Frontend

A225233 Triangle read by rows: T(n, k) = (2*n + 2 - k)*k, for 0 <= k <= n.

Table of values

List of values

A225233 Triangle read by rows: T(n, k) = (2n + 2 - k)k, for 0 <= k <= n.

n	a(n)
0	0
1	0
2	3
3	0
4	5
5	8
6	0
7	7
8	12
9	15
10	0
11	9
12	16
13	21
14	24
15	0
16	11
17	20
18	27
19	32
20	35
21	0
22	13
23	24
24	33
25	40
26	45
27	48
28	0
29	15
30	28
31	39
32	48
33	55
34	60
35	63
36	0
37	17
38	32
39	45
40	56
41	65
42	72
43	77
44	80
45	0
46	19
47	36
48	51
49	64
50	75
51	84
52	91
53	96
54	99
55	0
56	21
57	40
58	57
59	72
60	85
61	96
62	105
63	112
64	117
65	120
66	0
67	23
68	44
69	63
70	80
71	95
72	108
73	119
74	128
75	135
76	140
77	143
78	0
79	25