A245300 - cp's OEIS frontend

A245300 Triangle T(n,k) = (n+k)*(n+k+1)/2 + k, 0 <= k <= n, read by rows.

n	a(n)
0	0
1	1
2	4
3	3
4	7
5	12
6	6
7	11
8	17
9	24
10	10
11	16
12	23
13	31
14	40
15	15
16	22
17	30
18	39
19	49
20	60
21	21
22	29
23	38
24	48
25	59
26	71
27	84
28	28
29	37
30	47
31	58
32	70
33	83
34	97
35	112
36	36
37	46
38	57
39	69
40	82
41	96
42	111
43	127
44	144
45	45
46	56
47	68
48	81
49	95
50	110
51	126
52	143
53	161
54	180
55	55
56	67
57	80
58	94
59	109
60	125
61	142
62	160
63	179
64	199
65	220

[0, 1, 4, 3, 7, 12, 6, 11, 17, 24, 10, 16, 23, 31, 40, 15, 22, 30, 39, 49, 60, 21, 29, 38, 48, 59, 71, 84, 28, 37, 47, 58, 70, 83, 97, 112, 36, 46, 57, 69, 82, 96, 111, 127, 144, 45, 56, 68, 81, 95, 110, 126, 143, 161, 180, 55, 67, 80, 94, 109, 125, 142, 160, 179, 199, 220]

cp's OEIS Frontend

A245300 Triangle T(n,k) = (n+k)*(n+k+1)/2 + k, 0 <= k <= n, read by rows.

Table of values

List of values

n	a(n)
0	0
1	1
2	4
3	3
4	7
5	12
6	6
7	11
8	17
9	24
10	10
11	16
12	23
13	31
14	40
15	15
16	22
17	30
18	39
19	49
20	60
21	21
22	29
23	38
24	48
25	59
26	71
27	84
28	28
29	37
30	47
31	58
32	70
33	83
34	97
35	112
36	36
37	46
38	57
39	69
40	82
41	96
42	111
43	127
44	144
45	45
46	56
47	68
48	81
49	95
50	110
51	126
52	143
53	161
54	180
55	55
56	67
57	80
58	94
59	109
60	125
61	142
62	160
63	179
64	199
65	220

n	a(n)
0	0
1	1
2	4
3	3
4	7
5	12
6	6
7	11
8	17
9	24
10	10
11	16
12	23
13	31
14	40
15	15
16	22
17	30
18	39
19	49
20	60
21	21
22	29
23	38
24	48
25	59
26	71
27	84
28	28
29	37
30	47
31	58
32	70
33	83
34	97
35	112
36	36
37	46
38	57
39	69
40	82
41	96
42	111
43	127
44	144
45	45
46	56
47	68
48	81
49	95
50	110
51	126
52	143
53	161
54	180
55	55
56	67
57	80
58	94
59	109
60	125
61	142
62	160
63	179
64	199
65	220

n	a(n)
0	0
1	1
2	4
3	3
4	7
5	12
6	6
7	11
8	17
9	24
10	10
11	16
12	23
13	31
14	40
15	15
16	22
17	30
18	39
19	49
20	60
21	21
22	29
23	38
24	48
25	59
26	71
27	84
28	28
29	37
30	47
31	58
32	70
33	83
34	97
35	112
36	36
37	46
38	57
39	69
40	82
41	96
42	111
43	127
44	144
45	45
46	56
47	68
48	81
49	95
50	110
51	126
52	143
53	161
54	180
55	55
56	67
57	80
58	94
59	109
60	125
61	142
62	160
63	179
64	199
65	220