A004247 - cp's OEIS frontend

A004247 Multiplication table read by antidiagonals: T(i,j) = ij (i>=0, j>=0). Alternatively, multiplication triangle read by rows: P(i,j) = j(i-j) (i>=0, 0<=j<=i).

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	2
9	0
10	0
11	3
12	4
13	3
14	0
15	0
16	4
17	6
18	6
19	4
20	0
21	0
22	5
23	8
24	9
25	8
26	5
27	0
28	0
29	6
30	10
31	12
32	12
33	10
34	6
35	0
36	0
37	7
38	12
39	15
40	16
41	15
42	12
43	7
44	0
45	0
46	8
47	14
48	18
49	20
50	20
51	18
52	14
53	8
54	0
55	0
56	9
57	16
58	21
59	24
60	25
61	24
62	21
63	16
64	9
65	0
66	0
67	10
68	18
69	24
70	28
71	30
72	30
73	28
74	24
75	18
76	10
77	0
78	0
79	11
80	20
81	27
82	32
83	35
84	36
85	35
86	32
87	27
88	20
89	11
90	0
91	0
92	12
93	22
94	30
95	36
96	40
97	42
98	42
99	40
100	36
101	30

[0, 0, 0, 0, 1, 0, 0, 2, 2, 0, 0, 3, 4, 3, 0, 0, 4, 6, 6, 4, 0, 0, 5, 8, 9, 8, 5, 0, 0, 6, 10, 12, 12, 10, 6, 0, 0, 7, 12, 15, 16, 15, 12, 7, 0, 0, 8, 14, 18, 20, 20, 18, 14, 8, 0, 0, 9, 16, 21, 24, 25, 24, 21, 16, 9, 0, 0, 10, 18, 24, 28, 30, 30, 28, 24, 18, 10, 0, 0, 11, 20, 27, 32, 35, 36, 35, 32, 27, 20, 11, 0, 0, 12, 22, 30, 36, 40, 42, 42, 40, 36, 30]

cp's OEIS Frontend

A004247 Multiplication table read by antidiagonals: T(i,j) = ij (i>=0, j>=0). Alternatively, multiplication triangle read by rows: P(i,j) = j(i-j) (i>=0, 0<=j<=i).

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	2
9	0
10	0
11	3
12	4
13	3
14	0
15	0
16	4
17	6
18	6
19	4
20	0
21	0
22	5
23	8
24	9
25	8
26	5
27	0
28	0
29	6
30	10
31	12
32	12
33	10
34	6
35	0
36	0
37	7
38	12
39	15
40	16
41	15
42	12
43	7
44	0
45	0
46	8
47	14
48	18
49	20
50	20
51	18
52	14
53	8
54	0
55	0
56	9
57	16
58	21
59	24
60	25
61	24
62	21
63	16
64	9
65	0
66	0
67	10
68	18
69	24
70	28
71	30
72	30
73	28
74	24
75	18
76	10
77	0
78	0
79	11
80	20
81	27
82	32
83	35
84	36
85	35
86	32
87	27
88	20
89	11
90	0
91	0
92	12
93	22
94	30
95	36
96	40
97	42
98	42
99	40
100	36
101	30

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	2
9	0
10	0
11	3
12	4
13	3
14	0
15	0
16	4
17	6
18	6
19	4
20	0
21	0
22	5
23	8
24	9
25	8
26	5
27	0
28	0
29	6
30	10
31	12
32	12
33	10
34	6
35	0
36	0
37	7
38	12
39	15
40	16
41	15
42	12
43	7
44	0
45	0
46	8
47	14
48	18
49	20
50	20
51	18
52	14
53	8
54	0
55	0
56	9
57	16
58	21
59	24
60	25
61	24
62	21
63	16
64	9
65	0
66	0
67	10
68	18
69	24
70	28
71	30
72	30
73	28
74	24
75	18
76	10
77	0
78	0
79	11
80	20
81	27
82	32
83	35
84	36
85	35
86	32
87	27
88	20
89	11
90	0
91	0
92	12
93	22
94	30
95	36
96	40
97	42
98	42
99	40
100	36
101	30

cp's OEIS Frontend

A004247 Multiplication table read by antidiagonals: T(i,j) = i*j (i>=0, j>=0). Alternatively, multiplication triangle read by rows: P(i,j) = j*(i-j) (i>=0, 0<=j<=i).

Table of values

List of values

A004247 Multiplication table read by antidiagonals: T(i,j) = ij (i>=0, j>=0). Alternatively, multiplication triangle read by rows: P(i,j) = j(i-j) (i>=0, 0<=j<=i).

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	2
9	0
10	0
11	3
12	4
13	3
14	0
15	0
16	4
17	6
18	6
19	4
20	0
21	0
22	5
23	8
24	9
25	8
26	5
27	0
28	0
29	6
30	10
31	12
32	12
33	10
34	6
35	0
36	0
37	7
38	12
39	15
40	16
41	15
42	12
43	7
44	0
45	0
46	8
47	14
48	18
49	20
50	20
51	18
52	14
53	8
54	0
55	0
56	9
57	16
58	21
59	24
60	25
61	24
62	21
63	16
64	9
65	0
66	0
67	10
68	18
69	24
70	28
71	30
72	30
73	28
74	24
75	18
76	10
77	0
78	0
79	11
80	20
81	27
82	32
83	35
84	36
85	35
86	32
87	27
88	20
89	11
90	0
91	0
92	12
93	22
94	30
95	36
96	40
97	42
98	42
99	40
100	36
101	30